{"title":"Chlorine (Cl2) Gas Detectors","description":"\u003c!-- gas-type subcollection: chlorine-gas-detectors | smart tag = chlorine-detector --\u003e\n\n\u003ch2\u003eWhich chlorine (Cl2) gas detector should you buy in 2026?\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eShort answer:\u003c\/strong\u003e For chlorine, choose a portable \u003ca href=\"\/products\/forensics-chlorine-analyzer-cl2\" title=\"Cl2 analyzer\"\u003eCl2 analyzer\u003c\/a\u003e for surveys and a fixed \u003ca href=\"\/products\/forensics-chlorine-detector-wall-mount\" title=\"wall-mount Cl2 detector\"\u003ewall-mount Cl2 detector\u003c\/a\u003e for continuous room coverage — chlorine is highly toxic at low ppm, so detection is critical in water treatment and chemical handling.\u003c\/p\u003e\n\n\u003cp\u003eChlorine (Cl2) is a highly toxic, corrosive oxidizer dangerous at very low concentrations. It is widely used in water and wastewater treatment, pools, and chemical manufacturing. Cl2 detection uses an electrochemical sensor and is a hazard well outside the standard four-gas set.\u003c\/p\u003e\n\n\u003cp\u003eThis is a gas-type collection under the \u003ca href=\"\/collections\/gas-detectors\" title=\"Gas Detectors\"\u003eGas Detectors\u003c\/a\u003e hub. Match the gas to the right form factor: \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"Portable Gas Detectors\"\u003ePortable Gas Detectors\u003c\/a\u003e for carried checks, \u003ca href=\"\/collections\/personal-gas-detectors\" title=\"Personal \u0026amp; Wearable Gas Detectors\"\u003ePersonal \u0026amp; Wearable Gas Detectors\u003c\/a\u003e for single-worker exposure, \u003ca href=\"\/collections\/fixed-gas-detection-systems\" title=\"Fixed Gas Detection Systems\"\u003eFixed Gas Detection Systems\u003c\/a\u003e for continuous plant monitoring, \u003ca href=\"\/collections\/area-gas-monitors\" title=\"Area \u0026amp; Transportable Gas Monitors\"\u003eArea \u0026amp; Transportable Gas Monitors\u003c\/a\u003e for job-site zones, and \u003ca href=\"\/collections\/gas-leak-detectors\" title=\"Gas Leak Detectors\"\u003eGas Leak Detectors\u003c\/a\u003e to pinpoint a leak source.\u003c\/p\u003e\n\n\u003ch2\u003eDetectors in this collection\u003c\/h2\u003e\n\n\u003cp\u003eThis collection covers both form factors of chlorine detection: the portable \u003ca href=\"\/products\/forensics-chlorine-analyzer-cl2\" title=\"Forensics Chlorine Analyzer\"\u003eForensics Chlorine Analyzer\u003c\/a\u003e (0-50 ppm, pump \u0026amp; probe) for surveys and leak checks, and the fixed \u003ca href=\"\/products\/forensics-chlorine-detector-wall-mount\" title=\"Forensics Chlorine Wall-Mount Detector\"\u003eForensics Chlorine Wall-Mount Detector\u003c\/a\u003e (0-20 ppm, relay output) for continuous chlorine-room monitoring.\u003c\/p\u003e\n\n\u003cblockquote style=\"background:#1a1a1a;border-left:4px solid #ff9800;padding:14px 18px;margin:18px 0;color:#f5e6d3;\"\u003e\n\u003cstrong style=\"color:#ffb74d;\"\u003eEditor’s pick — both a portable analyzer and a fixed wall-mount detector\u003c\/strong\u003e\u003cbr\u003eUse the portable \u003ca href=\"\/products\/forensics-chlorine-analyzer-cl2\" title=\"Forensics Chlorine Analyzer\"\u003eForensics Chlorine Analyzer\u003c\/a\u003e to survey and locate leaks and the fixed \u003ca href=\"\/products\/forensics-chlorine-detector-wall-mount\" title=\"wall-mount detector\"\u003ewall-mount detector\u003c\/a\u003e to protect the room continuously — the standard two-layer Cl2 setup. \u003cspan style=\"display:block;margin-top:6px;font-size:0.82em;color:#bdae9d;\"\u003eAs an Amazon Associate, WC Safety earns from qualifying purchases.\u003c\/span\u003e\u003cp style=\"margin-top:12px;\"\u003e\u003ca href=\"https:\/\/www.amazon.com\/s?k=chlorine+gas+detector+cl2\u0026amp;tag=wcsafety04-20\" rel=\"sponsored nofollow noopener\" target=\"_blank\" style=\"display:inline-block;background:#FFD814;color:#0F1111;padding:12px 22px;text-decoration:none;font-weight:bold;border-radius:4px;border:1px solid #FCD200;\"\u003eCHECK PRICES ON AMAZON →\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003ch2\u003eHow to choose a chlorine detector\u003c\/h2\u003e\n\n\u003ch3\u003ePortable vs fixed\u003c\/h3\u003e\u003cp\u003eA portable Cl2 analyzer with a pump surveys for leaks and checks exposure; a fixed wall-mount detector monitors a chlorine room continuously and drives ventilation through a relay.\u003c\/p\u003e\u003ch3\u003eLow range, low alarms\u003c\/h3\u003e\u003cp\u003eChlorine is dangerous at low ppm, so choose instruments with a low, high-resolution range and set low alarm points.\u003c\/p\u003e\u003ch3\u003ePlacement\u003c\/h3\u003e\u003cp\u003eChlorine is heavier than air, so mount fixed detectors low and check low-lying and enclosed areas first — mount fixed detectors low, near the source and occupied area.\u003c\/p\u003e\n\n\u003ch2\u003eChlorine (Cl2) hazard, exposure limits \u0026amp; placement\u003c\/h2\u003e\n\n\u003cp\u003eThe OSHA Permissible Exposure Limit for chlorine is 1 ppm as a ceiling; ACGIH lists low TWA and STEL values. Chlorine is heavier than air, so mount fixed detectors low and check low-lying and enclosed areas first, so it accumulates in low areas. Because Cl2 is acutely toxic at low concentrations, fixed detectors should tie into ventilation and low alarm set points are essential. Confirm current limits with \u003ca href=\"https:\/\/www.osha.gov\/annotated-pels\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA's annotated PEL tables\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2 id=\"faq\"\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eWhat detects chlorine gas?\u003c\/h3\u003e\u003cp\u003eA dedicated Cl2 detector with an electrochemical chlorine sensor — portable for surveys and fixed for continuous room monitoring. A 4-gas monitor does not cover chlorine.\u003c\/p\u003e\n\u003ch3\u003eWhat is the OSHA limit for chlorine?\u003c\/h3\u003e\u003cp\u003e1 ppm as a ceiling limit per the \u003ca href=\"https:\/\/www.osha.gov\/annotated-pels\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA PEL\u003c\/a\u003e; ACGIH lists low TWA and STEL values. Chlorine is dangerous at low concentrations.\u003c\/p\u003e\n\u003ch3\u003ePortable or fixed chlorine detection?\u003c\/h3\u003e\u003cp\u003eBoth — a portable \u003ca href=\"\/products\/forensics-chlorine-analyzer-cl2\" title=\"Cl2 analyzer\"\u003eCl2 analyzer\u003c\/a\u003e for surveys and leak checks, and a fixed \u003ca href=\"\/products\/forensics-chlorine-detector-wall-mount\" title=\"wall-mount detector\"\u003ewall-mount detector\u003c\/a\u003e for continuous chlorine-room coverage.\u003c\/p\u003e\n\u003ch3\u003eWhere should a fixed chlorine detector be mounted?\u003c\/h3\u003e\u003cp\u003eLow on the wall near the source and occupied area — chlorine is heavier than air and settles low.\u003c\/p\u003e\n\u003ch3\u003eWhere is chlorine detection used?\u003c\/h3\u003e\u003cp\u003eWater and wastewater treatment, pools and aquatic facilities, chemical manufacturing, and bleach\/disinfectant production.\u003c\/p\u003e\n\u003ch3\u003eDoes the chlorine detector tie into ventilation?\u003c\/h3\u003e\u003cp\u003eThe fixed \u003ca href=\"\/products\/forensics-chlorine-detector-wall-mount\" title=\"wall-mount detector\"\u003ewall-mount detector\u003c\/a\u003e has a relay output to drive room exhaust ventilation or shutdown automatically.\u003c\/p\u003e\n\u003ch3\u003eDo chlorine sensors need calibration?\u003c\/h3\u003e\u003cp\u003eYes — bump-test with Cl2 calibration gas and recalibrate on schedule; electrochemical Cl2 sensors are consumables.\u003c\/p\u003e\n\u003ch3\u003eIs chlorine heavier than air?\u003c\/h3\u003e\u003cp\u003eYes — chlorine is heavier than air and collects in low-lying and enclosed areas, which guides detector placement.\u003c\/p\u003e\n\u003ch3\u003eCan I use it for confined-space entry?\u003c\/h3\u003e\u003cp\u003eChlorine is one hazard; entry also needs O2, combustible and toxic testing with a \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"portable 4-gas instrument\"\u003eportable 4-gas instrument\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow toxic is chlorine?\u003c\/h3\u003e\u003cp\u003eChlorine is acutely toxic and corrosive at low ppm, attacking the eyes and respiratory tract, which is why detection and low alarms are critical.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#1a2733;border:1px dashed #4fc3f7;padding:16px 20px;margin:30px 0 18px 0;color:#cfd8dc;font-size:0.92em;\"\u003e\n\u003cstrong style=\"color:#4fc3f7;\"\u003eWhy trust this chlorine detector collection?\u003c\/strong\u003e WC Safety is an independent industrial safety-equipment retailer. This collection is curated on detection principle, gas coverage and certification, grounded in published OSHA standards and manufacturer data — not paid placement. Disclosed: we earn Amazon affiliate commissions on outbound links; that does not influence what we recommend.\u003c\/div\u003e\n\u003cdiv style=\"background:#1a2733;border-left:4px solid #4fc3f7;padding:18px 22px;margin:18px 0;color:#cfd8dc;font-size:0.92em;\"\u003e\n\u003cstrong style=\"color:#4fc3f7;\"\u003eCurated by Steven Eaton, WC Safety Editorial\u003c\/strong\u003e — Industrial safety-equipment desk · atmospheric monitoring and chemical-specific gas detection.\u003cbr\u003e\n\u003cstrong\u003eLast reviewed:\u003c\/strong\u003e \u003ctime datetime=\"2026-06-22\"\u003eJune 22, 2026\u003c\/time\u003e · \u003cstrong\u003eSources:\u003c\/strong\u003e OSHA Annotated PEL tables, OSHA 29 CFR 1910, ACGIH Threshold Limit Values, manufacturer data sheets.\u003c\/div\u003e\n\u003cdiv style=\"background:#2a2520;border-left:4px solid #ff9800;padding:16px 20px;margin:18px 0;color:#f5e6d3;font-size:0.92em;\"\u003e\n\u003cstrong style=\"color:#ffb74d;\"\u003eDisclosure.\u003c\/strong\u003e WC Safety participates in the Amazon Associates Program (tag wcsafety04-20). Buyer guidance only, not medical, legal or regulatory advice — confirm gas-detection requirements against the applicable OSHA standard and, for commercial programs, a Certified Industrial Hygienist (CIH).\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\",\n \"@graph\": [\n  {\n   \"@type\": \"CollectionPage\",\n   \"@id\": \"https:\/\/wcsafety.com\/collections\/chlorine-gas-detectors#collection\",\n   \"name\": \"Chlorine (Cl2) Gas Detectors\",\n   \"description\": \"Shop chlorine (Cl2) gas detectors for water treatment, pools and chemical handling — portable analyzers and fixed wall-mount monitors. Compare and choose.\",\n   \"url\": \"https:\/\/wcsafety.com\/collections\/chlorine-gas-detectors\",\n   \"isPartOf\": {\n    \"@type\": \"WebSite\",\n    \"name\": \"WC Safety\",\n    \"url\": \"https:\/\/wcsafety.com\"\n   },\n   \"breadcrumb\": {\n    \"@id\": \"https:\/\/wcsafety.com\/collections\/chlorine-gas-detectors#breadcrumb\"\n   }\n  },\n  {\n   \"@type\": \"FAQPage\",\n   \"mainEntity\": [\n    {\n     \"@type\": \"Question\",\n     \"name\": \"What detects chlorine gas?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"A dedicated Cl2 detector with an electrochemical chlorine sensor — portable for surveys and fixed for continuous room monitoring. A 4-gas monitor does not cover chlorine.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"What is the OSHA limit for chlorine?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"1 ppm as a ceiling limit per the OSHA PEL; ACGIH lists low TWA and STEL values. Chlorine is dangerous at low concentrations.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Portable or fixed chlorine detection?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Both — a portable Cl2 analyzer for surveys and leak checks, and a fixed wall-mount detector for continuous chlorine-room coverage.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Where should a fixed chlorine detector be mounted?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Low on the wall near the source and occupied area — chlorine is heavier than air and settles low.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Where is chlorine detection used?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Water and wastewater treatment, pools and aquatic facilities, chemical manufacturing, and bleach\/disinfectant production.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Does the chlorine detector tie into ventilation?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"The fixed wall-mount detector has a relay output to drive room exhaust ventilation or shutdown automatically.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Do chlorine sensors need calibration?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Yes — bump-test with Cl2 calibration gas and recalibrate on schedule; electrochemical Cl2 sensors are consumables.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Is chlorine heavier than air?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Yes — chlorine is heavier than air and collects in low-lying and enclosed areas, which guides detector placement.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Can I use it for confined-space entry?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Chlorine is one hazard; entry also needs O2, combustible and toxic testing with a portable 4-gas instrument.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"How toxic is chlorine?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Chlorine is acutely toxic and corrosive at low ppm, attacking the eyes and respiratory tract, which is why detection and low alarms are critical.\"\n     }\n    }\n   ]\n  },\n  {\n   \"@type\": \"BreadcrumbList\",\n   \"@id\": \"https:\/\/wcsafety.com\/collections\/chlorine-gas-detectors#breadcrumb\",\n   \"itemListElement\": [\n    {\n     \"@type\": \"ListItem\",\n     \"position\": 1,\n     \"name\": \"Home\",\n     \"item\": \"https:\/\/wcsafety.com\/\"\n    },\n    {\n     \"@type\": \"ListItem\",\n     \"position\": 2,\n     \"name\": \"Gas Detectors\",\n     \"item\": \"https:\/\/wcsafety.com\/collections\/gas-detectors\"\n    },\n    {\n     \"@type\": \"ListItem\",\n     \"position\": 3,\n     \"name\": \"Chlorine (Cl2) Gas Detectors\"\n    }\n   ]\n  }\n ]\n}\n\u003c\/script\u003e","products":[{"product_id":"forensics-chlorine-analyzer-cl2","title":"Forensics Chlorine Analyzer — Cl2 Gas Detector (0-50 ppm, Pump \u0026 Probe)","description":"\u003c!-- PRODUCT B0DYC6KR3D | tag portable-gas-detector | TODO: add matching Product Review + best-of guide links when those silo layers exist --\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:4px solid #ff9800;padding:14px 18px;margin:0 0 18px 0;color:#f5e6d3;font-size:0.95em;\"\u003e\n\u003cstrong style=\"color:#ffb74d;\"\u003eEditor’s note:\u003c\/strong\u003e the Forensics chlorine analyzer is one of the instruments we curate in our \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"Portable Gas Detectors\"\u003ePortable Gas Detectors\u003c\/a\u003e buyer’s hub. Compare it with the \u003ca href=\"\/products\/forensics-voc-detector\" title=\"Forensics VOC Detector\"\u003eForensics VOC Detector\u003c\/a\u003e below before you order.\u003c\/div\u003e\n\n\u003ch2 id=\"top\"\u003eForensics Chlorine Analyzer — Cl2 Gas Detector with Pump\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eForensics chlorine analyzer\u003c\/strong\u003e measures Cl2 from 0-50 ppm with a built-in pump and 4 ft probe — the \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"portable gas detector\"\u003eportable gas detector\u003c\/a\u003e for water treatment, pools and chemical handling, covering a highly toxic gas the four-gas set doesn’t. It ships NIST-calibrated.\u003c\/p\u003e\n\n\u003cp style=\"font-size:0.9em;color:#bdae9d;margin:10px 0 18px 0;\"\u003eJump to: \u003ca href=\"#features\" style=\"color:#ffb74d;\"\u003eFeatures\u003c\/a\u003e · \u003ca href=\"#specs\" style=\"color:#ffb74d;\"\u003eSpecs\u003c\/a\u003e · \u003ca href=\"#compatibility\" style=\"color:#ffb74d;\"\u003eWhat it detects\u003c\/a\u003e · \u003ca href=\"#comparison\" style=\"color:#ffb74d;\"\u003eComparison\u003c\/a\u003e · \u003ca href=\"#faq\" style=\"color:#ffb74d;\"\u003eFAQ\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Forensics Chlorine Analyzer is a handheld, NIST-calibrated Cl2 gas detector (0-50 ppm) with a built-in pump and 4 ft probe for water treatment, pools and chemical handling.\u003c\/p\u003e\n\n\u003ch3 id=\"features\"\u003eKey features\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eMeasures chlorine (Cl2) from 0-50 ppm — a highly toxic gas outside the 4-gas set\u003c\/li\u003e\n\u003cli\u003eBuilt-in pump and 4 ft probe to survey and sample remotely\u003c\/li\u003e\n\u003cli\u003eUSA NIST-traceable calibration with certificate\u003c\/li\u003e\n\u003cli\u003eAudible, visual and vibration alarms\u003c\/li\u003e\n\u003cli\u003eUSB-rechargeable for shift-long use\u003c\/li\u003e\n\u003cli\u003eFor water treatment, pools and chemical handling where Cl2 is a risk\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"display:flex;gap:14px;flex-wrap:wrap;margin:18px 0;\"\u003e\n\u003cdiv style=\"flex:1;min-width:240px;background:#1b3a2a;border:1px solid #4caf50;border-radius:6px;padding:14px 18px;\"\u003e\n\u003cstrong style=\"color:#81c784;\"\u003ePros\u003c\/strong\u003e\u003cul style=\"margin:8px 0 0 0;\"\u003e\n\u003cli\u003eDedicated Cl2 detection\u003c\/li\u003e\n\u003cli\u003eBuilt-in pump + 4ft probe\u003c\/li\u003e\n\u003cli\u003eNIST-traceable + certificate\u003c\/li\u003e\n\u003cli\u003eUSB-rechargeable\u003c\/li\u003e\n\u003cli\u003eTop rating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:240px;background:#3a1e1e;border:1px solid #ef5350;border-radius:6px;padding:14px 18px;\"\u003e\n\u003cstrong style=\"color:#e57373;\"\u003eCons\u003c\/strong\u003e\u003cul style=\"margin:8px 0 0 0;\"\u003e\n\u003cli\u003eChlorine only\u003c\/li\u003e\n\u003cli\u003ePremium price\u003c\/li\u003e\n\u003cli\u003eSensor needs periodic replacement\u003c\/li\u003e\n\u003cli\u003eToxic-exposure monitor (not explosion-rated)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 id=\"specs\"\u003eSpecifications\u003c\/h3\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;margin:14px 0;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#2a2a2a;\"\u003e\n\u003cth style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;text-align:left;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eGas detected\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eChlorine (Cl2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eRange\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003e0-50 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eSampling\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eBuilt-in pump + 4 ft probe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eAlarms\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eAudible, visual \u0026amp; vibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eCalibration\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eUSA NIST-traceable + certificate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003ePower\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eUSB-rechargeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eUse\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eIndustrial single-gas detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003ch3\u003eWhere the Forensics Chlorine Analyzer fits\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eWater and wastewater treatment\u003c\/li\u003e\n\u003cli\u003ePool and aquatic facilities\u003c\/li\u003e\n\u003cli\u003eChemical manufacturing \u0026amp; handling\u003c\/li\u003e\n\u003cli\u003eBleach and disinfectant operations\u003c\/li\u003e\n\u003cli\u003eLeak surveys around Cl2 cylinders\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"compatibility\"\u003eWhat the Forensics Chlorine Analyzer detects (and what it doesn’t)\u003c\/h2\u003e\n\n\u003cp\u003eIt detects \u003cstrong\u003echlorine (Cl2) only\u003c\/strong\u003e — not O2, combustibles, CO or H2S. For the four atmospheric gases use a \u003ca href=\"\/products\/forensics-detectors-4-gas-meter-confined-space\" title=\"Forensics 4 Gas Meter\"\u003eForensics 4 Gas Meter\u003c\/a\u003e; for other single toxics see the \u003ca href=\"\/products\/forensics-ammonia-detector-nh3\" title=\"Ammonia\"\u003eAmmonia\u003c\/a\u003e or \u003ca href=\"\/products\/forensics-sulfur-dioxide-analyzer-so2\" title=\"SO2\"\u003eSO2\u003c\/a\u003e analyzers. For permanent Cl2 coverage of a chlorine room, use a fixed unit such as the \u003ca href=\"\/products\/\/products\/forensics-chlorine-detector-wall-mount\" title=\"Forensics Chlorine wall-mount detector\"\u003eForensics Chlorine wall-mount detector\u003c\/a\u003e. Bump-test with Cl2 calibration gas; the pump and probe let you survey safely from a distance.\u003c\/p\u003e\n\n\u003cp\u003eCross-shopping? This unit sits in our \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"Portable Gas Detectors\"\u003ePortable Gas Detectors\u003c\/a\u003e hub alongside \u003ca href=\"\/products\/forensics-voc-detector\" title=\"Forensics VOC Detector\"\u003eForensics VOC Detector\u003c\/a\u003e, \u003ca href=\"\/products\/amprobe-co2-100-carbon-dioxide-meter\" title=\"Amprobe CO2-100\"\u003eAmprobe CO2-100\u003c\/a\u003e, \u003ca href=\"\/products\/forensics-ammonia-detector-nh3\" title=\"Forensics Ammonia Detector\"\u003eForensics Ammonia Detector\u003c\/a\u003e, \u003ca href=\"\/products\/forensics-sulfur-dioxide-analyzer-so2\" title=\"Forensics SO2 Analyzer\"\u003eForensics SO2 Analyzer\u003c\/a\u003e. For other gas-detection form factors see \u003ca href=\"\/collections\/personal-gas-detectors\" title=\"Personal \u0026amp; Wearable Gas Detectors\"\u003ePersonal \u0026amp; Wearable Gas Detectors\u003c\/a\u003e, \u003ca href=\"\/collections\/fixed-gas-detection-systems\" title=\"Fixed Gas Detection Systems\"\u003eFixed Gas Detection Systems\u003c\/a\u003e, \u003ca href=\"\/collections\/area-gas-monitors\" title=\"Area \u0026amp; Transportable Gas Monitors\"\u003eArea \u0026amp; Transportable Gas Monitors\u003c\/a\u003e, or browse the full \u003ca href=\"\/collections\/gas-detectors\" title=\"Gas Detectors\"\u003eGas Detectors\u003c\/a\u003e range.\u003c\/p\u003e\n\n\u003ch2 id=\"comparison\"\u003eForensics specialty single-gas analyzers compared\u003c\/h2\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;margin:14px 0;\"\u003e\n\u003ccaption style=\"color:#bdae9d;font-size:0.85em;text-align:left;padding:4px 0;\"\u003eForensics specialty single-gas analyzers (NIST-calibrated)\u003c\/caption\u003e\n\u003cthead\u003e\u003ctr style=\"background:#2a2a2a;\"\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eGas\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eRange\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eSampling\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eStreet price\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e\u003ca href=\"\/products\/forensics-ammonia-detector-nh3\" title=\"Ammonia (NH3)\"\u003eAmmonia (NH3)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eNH3\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eHandheld\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eDiffusion\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e~$198\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e\u003ca href=\"\/products\/forensics-chlorine-analyzer-cl2\" title=\"Chlorine (Cl2)\"\u003eChlorine (Cl2)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eCl2\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e0-50 ppm\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003ePump + 4ft probe\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e~$795\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e\u003ca href=\"\/products\/forensics-sulfur-dioxide-analyzer-so2\" title=\"Sulfur Dioxide (SO2)\"\u003eSulfur Dioxide (SO2)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eSO2\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e0-20 ppm\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003ePump + 4ft probe\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e~$695\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#2a2520;\"\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e\u003cstrong\u003e\u003ca href=\"\/products\/forensics-voc-detector\" title=\"VOC\"\u003eVOC\u003c\/a\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eVOCs\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e0-100 ppm\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003ePump + 4ft probe\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e~$895\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003cul\u003e\n\u003cli\u003eChoose the \u003cstrong\u003eChlorine Analyzer\u003c\/strong\u003e for water treatment, pools and chemical handling Cl2 monitoring.\u003c\/li\u003e\n\u003cli\u003eNeed permanent room coverage? Use the \u003ca href=\"\/products\/\/products\/forensics-chlorine-detector-wall-mount\" title=\"Forensics Chlorine wall-mount detector\"\u003eForensics Chlorine wall-mount detector\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eFor ammonia or SO2, see the \u003ca href=\"\/products\/forensics-ammonia-detector-nh3\" title=\"Ammonia\"\u003eAmmonia\u003c\/a\u003e and \u003ca href=\"\/products\/forensics-sulfur-dioxide-analyzer-so2\" title=\"SO2\"\u003eSO2\u003c\/a\u003e analyzers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"faq\"\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat does the Forensics chlorine analyzer measure?\u003c\/h3\u003e\u003cp\u003eChlorine (Cl2) from 0-50 ppm. It does not measure O2, LEL, CO or H2S — use a \u003ca href=\"\/products\/forensics-detectors-4-gas-meter-confined-space\" title=\"4 gas meter\"\u003e4 gas meter\u003c\/a\u003e for those.\u003c\/p\u003e\n\u003ch3\u003eDoes it have a pump?\u003c\/h3\u003e\u003cp\u003eYes — a built-in pump and 4 ft probe let you survey for and sample chlorine leaks from a safe distance.\u003c\/p\u003e\n\u003ch3\u003eWhere is a chlorine detector used?\u003c\/h3\u003e\u003cp\u003eWater and wastewater treatment, pools and aquatic facilities, chemical manufacturing, and bleach\/disinfectant operations.\u003c\/p\u003e\n\u003ch3\u003eIs it NIST calibrated?\u003c\/h3\u003e\u003cp\u003eYes — USA NIST-traceable calibration with certificate. Bump-test with Cl2 calibration gas and recalibrate on schedule.\u003c\/p\u003e\n\u003ch3\u003ePortable or fixed for chlorine?\u003c\/h3\u003e\u003cp\u003eThis is the portable survey\/exposure tool. For continuous room coverage use the fixed \u003ca href=\"\/products\/\/products\/forensics-chlorine-detector-wall-mount\" title=\"Forensics Chlorine wall-mount detector\"\u003eForensics Chlorine wall-mount detector\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow is it powered?\u003c\/h3\u003e\u003cp\u003eUSB-rechargeable, sized for shift-long use including pump operation.\u003c\/p\u003e\n\u003ch3\u003eWhat alarms does it have?\u003c\/h3\u003e\u003cp\u003eAudible, visual and vibration alarms trigger when Cl2 exceeds the set point.\u003c\/p\u003e\n\u003ch3\u003eCan it detect other gases?\u003c\/h3\u003e\u003cp\u003eNo — Cl2 only. For ammonia use the \u003ca href=\"\/products\/forensics-ammonia-detector-nh3\" title=\"Ammonia Detector\"\u003eAmmonia Detector\u003c\/a\u003e; for SO2 the \u003ca href=\"\/products\/forensics-sulfur-dioxide-analyzer-so2\" title=\"SO2 Analyzer\"\u003eSO2 Analyzer\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat are the chlorine exposure limits?\u003c\/h3\u003e\u003cp\u003eSet alarms to the applicable OSHA PEL and ACGIH TLV for chlorine; chlorine is dangerous at low ppm, so low set points matter.\u003c\/p\u003e\n\u003ch3\u003eIs it in stock and how does it ship?\u003c\/h3\u003e\u003cp\u003eUse the Amazon buy button for current availability and delivery timing through our fulfillment partner.\u003c\/p\u003e\n\u003ch3\u003eDoes the sensor need replacing?\u003c\/h3\u003e\u003cp\u003eYes — electrochemical Cl2 sensors are consumables; replace per the manufacturer's schedule and verify against a known source.\u003c\/p\u003e\n\u003ch3\u003eCan I use it for confined-space entry?\u003c\/h3\u003e\u003cp\u003eCl2 is one hazard; entry also needs O2, combustible and toxic testing. Use a \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"Portable Gas Detectors\"\u003ePortable Gas Detectors\u003c\/a\u003e 4-gas instrument for pre-entry plus this for the chlorine component.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border:1px solid #3a3a3a;border-radius:6px;padding:16px 18px;margin:22px 0;\"\u003e\n\u003cp style=\"margin:0 0 10px 0;color:#f5e6d3;\"\u003eReady to order the \u003cstrong\u003eForensics chlorine analyzer\u003c\/strong\u003e? Add it to your cart above, or check the current Amazon price below. Compare it against the rest of our \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"Portable Gas Detectors\"\u003ePortable Gas Detectors\u003c\/a\u003e lineup before you buy.\u003c\/p\u003e\n\u003cp style=\"display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:0;\"\u003e\u003ca href=\"https:\/\/www.amazon.com\/dp\/B0DYC6KR3D?tag=wcsafety04-20\" rel=\"sponsored nofollow noopener\" target=\"_blank\" style=\"display:inline-block;background:#FFD814;color:#0F1111;padding:13px 26px;text-decoration:none;font-weight:bold;border-radius:4px;border:1px solid #FCD200;\"\u003eCHECK PRICE ON AMAZON →\u003c\/a\u003e\u003cspan style=\"font-size:0.8em;color:#bdae9d;\"\u003eAs an Amazon Associate, WC Safety earns from qualifying purchases.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a2733;border:1px dashed #4fc3f7;padding:16px 20px;margin:30px 0 18px 0;color:#cfd8dc;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#4fc3f7;\"\u003eWhy trust this Forensics Detectors page?\u003c\/strong\u003e WC Safety is an independent industrial safety-equipment retailer serving safety managers, procurement teams and field supervisors. The specifications here are taken from the manufacturer’s published listing for Forensics Chlorine Analyzer and framed against \u003ca href=\"https:\/\/www.osha.gov\/laws-regs\/regulations\/standardnumber\/1910\/1910.146\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA 29 CFR 1910.146\u003c\/a\u003e and \u003ca href=\"https:\/\/www.osha.gov\/annotated-pels\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA Permissible Exposure Limits\u003c\/a\u003e. Disclosed: WC Safety earns Amazon affiliate commissions on outbound clicks; that does not influence the specs shown or our lineup.\n\u003c\/div\u003e\n\u003cdiv style=\"background:#1a2733;border-left:4px solid #4fc3f7;padding:18px 22px;margin:18px 0;color:#cfd8dc;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#4fc3f7;\"\u003eBy Steven Eaton, WC Safety Editorial\u003c\/strong\u003e — Industrial safety-equipment desk · specialization: atmospheric monitoring, gas detection and instrument selection.\u003cbr\u003e\n  \u003cstrong\u003eLast updated:\u003c\/strong\u003e \u003ctime datetime=\"2026-06-22\"\u003eJune 22, 2026\u003c\/time\u003e · \u003cstrong\u003eSources reviewed:\u003c\/strong\u003e manufacturer product listing \u0026amp; specifications, OSHA 29 CFR 1910.146, OSHA Annotated PEL tables, ACGIH Threshold Limit Values.\u003cbr\u003e\n  \u003cstrong\u003eEditorial standard:\u003c\/strong\u003e \u003cem\u003eZero sponsored listings. No manufacturer input. Specs verified against the manufacturer’s published data.\u003c\/em\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#1a2733;border-left:4px solid #4fc3f7;padding:16px 20px;margin:18px 0;color:#cfd8dc;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#4fc3f7;\"\u003eHow this page is maintained.\u003c\/strong\u003e Specifications and pricing are reviewed against the manufacturer’s current listing and re-checked whenever the lineup changes. Gas-detection guidance follows \u003ca href=\"https:\/\/www.osha.gov\/laws-regs\/regulations\/standardnumber\/1910\/1910.146\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA 1910.146\u003c\/a\u003e and \u003ca href=\"https:\/\/www.osha.gov\/annotated-pels\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA PELs\u003c\/a\u003e, cross-referenced with ACGIH TLVs.\n\u003c\/div\u003e\n\u003cdiv style=\"background:#2a2520;border-left:4px solid #ff9800;padding:16px 20px;margin:18px 0;color:#f5e6d3;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#ffb74d;\"\u003eDisclosure.\u003c\/strong\u003e WC Safety participates in the Amazon Associates Program and earns commissions on qualifying purchases through outbound links on this page (tag wcsafety04-20). We are not sponsored by any instrument manufacturer. This page is buyer guidance, not medical, legal or regulatory advice — confirm gas-detection requirements for your site against the applicable OSHA standard and, for commercial monitoring programs, a Certified Industrial Hygienist (CIH).\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"Product\", \"@id\": \"https:\/\/wcsafety.com\/products\/forensics-chlorine-analyzer-cl2#product\", \"name\": \"Forensics Chlorine Analyzer — Cl2 Gas Detector (0-50 ppm, Pump \u0026 Probe)\", \"description\": \"Forensics chlorine analyzer — handheld Cl2 gas detector, 0-50 ppm with built-in pump, 4ft probe and NIST calibration. Order at WC Safety.\", \"sku\": \"B0DYC6KR3D\", \"mpn\": \"FD-CL2\", \"image\": [\"https:\/\/wcsafety.com\/cdn\/shop\/products\/forensics-chlorine-analyzer-cl2.jpg\"], \"brand\": {\"@type\": \"Brand\", \"name\": \"Forensics Detectors\"}, \"category\": \"Portable Gas Detector\", \"isPartOf\": {\"@type\": \"CollectionPage\", \"@id\": \"https:\/\/wcsafety.com\/collections\/portable-gas-detectors#collection\", \"name\": \"Portable Gas Detectors\", \"url\": \"https:\/\/wcsafety.com\/collections\/portable-gas-detectors\"}, \"isRelatedTo\": [{\"@type\": \"Product\", \"name\": \"Forensics VOC Detector\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-voc-detector\"}, {\"@type\": \"Product\", \"name\": \"Amprobe CO2-100 Carbon Dioxide Meter\", \"url\": \"https:\/\/wcsafety.com\/products\/amprobe-co2-100-carbon-dioxide-meter\"}, {\"@type\": \"Product\", \"name\": \"Forensics Ammonia (NH3) Detector\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-ammonia-detector-nh3\"}, {\"@type\": \"Product\", \"name\": \"Forensics Sulfur Dioxide (SO2) Analyzer\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-sulfur-dioxide-analyzer-so2\"}, {\"@type\": \"Product\", \"name\": \"ATO Ozone (O3) Gas Detector\", \"url\": \"https:\/\/wcsafety.com\/products\/ato-ozone-gas-detector-o3\"}, {\"@type\": \"Product\", \"name\": \"ATO Handheld 4 Gas Detector\", \"url\": \"https:\/\/wcsafety.com\/products\/ato-handheld-4-gas-detector\"}, {\"@type\": \"Product\", \"name\": \"Forensics Mini 4 Gas Monitor\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-mini-4-gas-monitor\"}, {\"@type\": \"Product\", \"name\": \"Forensics Detectors 4 Gas Meter\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-detectors-4-gas-meter-confined-space\"}, {\"@type\": \"Product\", \"name\": \"Forensics Detectors 4 Gas Monitor with Pump\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-detectors-4-gas-monitor-with-pump\"}], \"offers\": {\"@type\": \"Offer\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-chlorine-analyzer-cl2\", \"priceCurrency\": \"USD\", \"price\": \"795.00\", \"availability\": \"https:\/\/schema.org\/InStock\", \"seller\": {\"@type\": \"Organization\", \"name\": \"WC Safety\"}}}, {\"@type\": \"BreadcrumbList\", \"@id\": \"https:\/\/wcsafety.com\/products\/forensics-chlorine-analyzer-cl2#breadcrumb\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/wcsafety.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Gas Detectors\", \"item\": \"https:\/\/wcsafety.com\/collections\/gas-detectors\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Portable Gas Detectors\", \"item\": \"https:\/\/wcsafety.com\/collections\/portable-gas-detectors\"}, {\"@type\": \"ListItem\", \"position\": 4, \"name\": \"Forensics Chlorine Analyzer — Cl2 Gas Detector (0-50 ppm, Pump \u0026 Probe)\"}]}, {\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the Forensics chlorine analyzer measure?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Chlorine (Cl2) from 0-50 ppm. It does not measure O2, LEL, CO or H2S — use a 4 gas meter for those.\"}}, {\"@type\": \"Question\", \"name\": \"Does it have a pump?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — a built-in pump and 4 ft probe let you survey for and sample chlorine leaks from a safe distance.\"}}, {\"@type\": \"Question\", \"name\": \"Where is a chlorine detector used?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Water and wastewater treatment, pools and aquatic facilities, chemical manufacturing, and bleach\/disinfectant operations.\"}}, {\"@type\": \"Question\", \"name\": \"Is it NIST calibrated?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — USA NIST-traceable calibration with certificate. Bump-test with Cl2 calibration gas and recalibrate on schedule.\"}}, {\"@type\": \"Question\", \"name\": \"Portable or fixed for chlorine?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This is the portable survey\/exposure tool. For continuous room coverage use the fixed Forensics Chlorine wall-mount detector.\"}}, {\"@type\": \"Question\", \"name\": \"How is it powered?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"USB-rechargeable, sized for shift-long use including pump operation.\"}}, {\"@type\": \"Question\", \"name\": \"What alarms does it have?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Audible, visual and vibration alarms trigger when Cl2 exceeds the set point.\"}}, {\"@type\": \"Question\", \"name\": \"Can it detect other gases?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — Cl2 only. For ammonia use the Ammonia Detector; for SO2 the SO2 Analyzer.\"}}, {\"@type\": \"Question\", \"name\": \"What are the chlorine exposure limits?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Set alarms to the applicable OSHA PEL and ACGIH TLV for chlorine; chlorine is dangerous at low ppm, so low set points matter.\"}}, {\"@type\": \"Question\", \"name\": \"Is it in stock and how does it ship?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use the Amazon buy button for current availability and delivery timing through our fulfillment partner.\"}}, {\"@type\": \"Question\", \"name\": \"Does the sensor need replacing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — electrochemical Cl2 sensors are consumables; replace per the manufacturer's schedule and verify against a known source.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use it for confined-space entry?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Cl2 is one hazard; entry also needs O2, combustible and toxic testing. Use a Portable Gas Detectors 4-gas instrument for pre-entry plus this for the chlorine component.\"}}]}, {\"@type\": \"Organization\", \"@id\": \"https:\/\/wcsafety.com\/#org\", \"name\": \"WC Safety\", \"url\": \"https:\/\/wcsafety.com\", \"logo\": \"https:\/\/wcsafety.com\/cdn\/shop\/files\/logo.png\"}, {\"@type\": \"Person\", \"@id\": \"https:\/\/wcsafety.com\/#editor\", \"name\": \"Steven Eaton\", \"jobTitle\": \"Editorial Lead\", \"worksFor\": {\"@id\": \"https:\/\/wcsafety.com\/#org\"}, \"knowsAbout\": [\"industrial gas detection\", \"atmospheric monitoring\", \"personal protective equipment\"]}, {\"@type\": \"Brand\", \"name\": \"Forensics Detectors\"}]}\n\u003c\/script\u003e","brand":"Forensics Detectors","offers":[{"title":"Default Title","offer_id":44266961305688,"sku":"B0DYC6KR3D","price":795.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1900\/0920\/files\/71jRDvulnBL._AC_SL1500.jpg?v=1782133089"},{"product_id":"forensics-chlorine-detector-wall-mount","title":"Forensics Chlorine Detector — Industrial Wall-Mount (0-20 ppm Cl2, Relay Output)","description":"\u003c!-- PRODUCT B07Z8DDWXQ | tag fixed-gas-detector | TODO: add matching Product Review + best-of guide links when those silo layers exist --\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border-left:4px solid #ff9800;padding:14px 18px;margin:0 0 18px 0;color:#f5e6d3;font-size:0.95em;\"\u003e\n\u003cstrong style=\"color:#ffb74d;\"\u003eEditor’s note:\u003c\/strong\u003e the Forensics chlorine detector is one of the instruments we curate in our \u003ca href=\"\/collections\/fixed-gas-detection-systems\" title=\"Fixed Gas Detection Systems\"\u003eFixed Gas Detection Systems\u003c\/a\u003e buyer’s hub. Compare it with the \u003ca href=\"\/products\/forensics-ex-lel-gas-detector-wall-mount\" title=\"Forensics EX\/LEL Wall-Mount\"\u003eForensics EX\/LEL Wall-Mount\u003c\/a\u003e below before you order.\u003c\/div\u003e\n\n\u003ch2 id=\"top\"\u003eForensics Chlorine Detector — Wall-Mount Cl2 Monitor\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eForensics chlorine detector\u003c\/strong\u003e is a wall-mounted, continuously-monitoring Cl2 head reading 0-20 ppm — a \u003ca href=\"\/collections\/fixed-gas-detection-systems\" title=\"fixed gas detection system\"\u003efixed gas detection system\u003c\/a\u003e that drives ventilation or shutdown through its relay output to protect chlorine rooms around the clock.\u003c\/p\u003e\n\n\u003cp style=\"font-size:0.9em;color:#bdae9d;margin:10px 0 18px 0;\"\u003eJump to: \u003ca href=\"#features\" style=\"color:#ffb74d;\"\u003eFeatures\u003c\/a\u003e · \u003ca href=\"#specs\" style=\"color:#ffb74d;\"\u003eSpecs\u003c\/a\u003e · \u003ca href=\"#compatibility\" style=\"color:#ffb74d;\"\u003eWhat it detects\u003c\/a\u003e · \u003ca href=\"#comparison\" style=\"color:#ffb74d;\"\u003eComparison\u003c\/a\u003e · \u003ca href=\"#faq\" style=\"color:#ffb74d;\"\u003eFAQ\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Forensics Chlorine Detector is a wall-mounted fixed Cl2 monitor (0-20 ppm) with relay output, explosion-proof enclosure and NIST-traceable calibration for continuous chlorine-room monitoring.\u003c\/p\u003e\n\n\u003ch3 id=\"features\"\u003eKey features\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eContinuously monitors chlorine (Cl2) from 0-20 ppm on a fixed wall-mounted head\u003c\/li\u003e\n\u003cli\u003eRelay output drives ventilation, alarms or shutdown when Cl2 is detected\u003c\/li\u003e\n\u003cli\u003eExplosion-proof aluminum enclosure for chlorine rooms and plant areas\u003c\/li\u003e\n\u003cli\u003eAdjustable sound and light alarms set to your action levels\u003c\/li\u003e\n\u003cli\u003eUSA NIST-traceable calibration\u003c\/li\u003e\n\u003cli\u003eAlways-on Cl2 protection where a carried instrument can't be\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"display:flex;gap:14px;flex-wrap:wrap;margin:18px 0;\"\u003e\n\u003cdiv style=\"flex:1;min-width:240px;background:#1b3a2a;border:1px solid #4caf50;border-radius:6px;padding:14px 18px;\"\u003e\n\u003cstrong style=\"color:#81c784;\"\u003ePros\u003c\/strong\u003e\u003cul style=\"margin:8px 0 0 0;\"\u003e\n\u003cli\u003eContinuous unattended Cl2 monitoring\u003c\/li\u003e\n\u003cli\u003eRelay output for ventilation\/shutdown\u003c\/li\u003e\n\u003cli\u003eExplosion-proof aluminum build\u003c\/li\u003e\n\u003cli\u003eNIST-traceable calibration\u003c\/li\u003e\n\u003cli\u003eLow 0-20 ppm range for strict Cl2 limits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:240px;background:#3a1e1e;border:1px solid #ef5350;border-radius:6px;padding:14px 18px;\"\u003e\n\u003cstrong style=\"color:#e57373;\"\u003eCons\u003c\/strong\u003e\u003cul style=\"margin:8px 0 0 0;\"\u003e\n\u003cli\u003eChlorine only\u003c\/li\u003e\n\u003cli\u003eSingle point coverage\u003c\/li\u003e\n\u003cli\u003eHard-wired install\u003c\/li\u003e\n\u003cli\u003eNot portable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 id=\"specs\"\u003eSpecifications\u003c\/h3\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;margin:14px 0;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#2a2a2a;\"\u003e\n\u003cth style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;text-align:left;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eGas detected\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eChlorine (Cl2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eRange\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003e0-20 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eWall-mount, fixed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eMonitoring\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eContinuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eOutput\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eRelay output + sound \u0026amp; light alarms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eRating\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eExplosion-proof\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eCalibration\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eUSA NIST-traceable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#ffb74d;padding:8px 10px;border:1px solid #3a3a3a;white-space:nowrap;\"\u003eEnclosure\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eAluminum, 3 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003ch3\u003eWhere the Forensics Chlorine Detector fits\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eWater and wastewater chlorine rooms\u003c\/li\u003e\n\u003cli\u003ePool and aquatic plant chemical rooms\u003c\/li\u003e\n\u003cli\u003eChemical manufacturing \u0026amp; storage\u003c\/li\u003e\n\u003cli\u003eBleach\/disinfectant production\u003c\/li\u003e\n\u003cli\u003eCl2 cylinder and feed rooms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"compatibility\"\u003eWhat the Forensics Chlorine Detector detects (and what it doesn’t)\u003c\/h2\u003e\n\n\u003cp\u003eThis head monitors \u003cstrong\u003echlorine (Cl2) only\u003c\/strong\u003e — not combustibles, oxygen or other toxics. For combustible monitoring use the \u003ca href=\"\/products\/forensics-ex-lel-gas-detector-wall-mount\" title=\"Forensics EX LEL Detector\"\u003eForensics EX LEL Detector\u003c\/a\u003e; for several atmospheric gases the \u003ca href=\"\/products\/forensics-4-gas-wall-mount-monitor\" title=\"Forensics 4 Gas Wall-Mount Monitor\"\u003eForensics 4 Gas Wall-Mount Monitor\u003c\/a\u003e. For a portable Cl2 survey\/exposure tool, pair it with the \u003ca href=\"\/products\/\/products\/forensics-chlorine-analyzer-cl2\" title=\"Forensics Chlorine Analyzer\"\u003eForensics Chlorine Analyzer\u003c\/a\u003e. Mount it low — chlorine is heavier than air — near the source and occupied area, and tie the relay into room exhaust. Recalibrate with Cl2 gas on schedule.\u003c\/p\u003e\n\n\u003cp\u003eCross-shopping? This unit sits in our \u003ca href=\"\/collections\/fixed-gas-detection-systems\" title=\"Fixed Gas Detection Systems\"\u003eFixed Gas Detection Systems\u003c\/a\u003e hub alongside \u003ca href=\"\/products\/forensics-ex-lel-gas-detector-wall-mount\" title=\"Forensics EX\/LEL Wall-Mount\"\u003eForensics EX\/LEL Wall-Mount\u003c\/a\u003e, \u003ca href=\"\/products\/forensics-hydrogen-gas-detector-wall-mount\" title=\"Forensics Hydrogen Wall-Mount\"\u003eForensics Hydrogen Wall-Mount\u003c\/a\u003e, \u003ca href=\"\/products\/forensics-4-gas-wall-mount-monitor\" title=\"Forensics 4 Gas Wall-Mount\"\u003eForensics 4 Gas Wall-Mount\u003c\/a\u003e. For other gas-detection form factors see \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"Portable Gas Detectors\"\u003ePortable Gas Detectors\u003c\/a\u003e, \u003ca href=\"\/collections\/personal-gas-detectors\" title=\"Personal \u0026amp; Wearable Gas Detectors\"\u003ePersonal \u0026amp; Wearable Gas Detectors\u003c\/a\u003e, \u003ca href=\"\/collections\/area-gas-monitors\" title=\"Area \u0026amp; Transportable Gas Monitors\"\u003eArea \u0026amp; Transportable Gas Monitors\u003c\/a\u003e, or browse the full \u003ca href=\"\/collections\/gas-detectors\" title=\"Gas Detectors\"\u003eGas Detectors\u003c\/a\u003e range.\u003c\/p\u003e\n\n\u003ch2 id=\"comparison\"\u003eForensics fixed wall-mount family compared\u003c\/h2\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;margin:14px 0;\"\u003e\n\u003ccaption style=\"color:#bdae9d;font-size:0.85em;text-align:left;padding:4px 0;\"\u003eForensics Detectors fixed wall-mount family (continuous, relay output, NIST-traceable)\u003c\/caption\u003e\n\u003cthead\u003e\u003ctr style=\"background:#2a2a2a;\"\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eGas(es)\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eRange\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eOutput\u003c\/th\u003e\n\u003cth style=\"color:#ffb74d;padding:9px;border:1px solid #3a3a3a;text-align:left;\"\u003eStreet price\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e\u003ca href=\"\/products\/forensics-ex-lel-gas-detector-wall-mount\" title=\"EX LEL Detector\"\u003eEX LEL Detector\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eCombustibles\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e0-100% LEL\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eRelay + alarms\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e~$599\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e\u003ca href=\"\/products\/forensics-hydrogen-gas-detector-wall-mount\" title=\"Hydrogen Detector\"\u003eHydrogen Detector\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eHydrogen (H2)\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e0-1000 ppm\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eRelay + alarms\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e~$799\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e\u003ca href=\"\/products\/forensics-4-gas-wall-mount-monitor\" title=\"4 Gas Monitor\"\u003e4 Gas Monitor\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eCO, H2S, O2, EX\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eMulti-gas\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eRelay + alarms\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e~$1,395\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#2a2520;\"\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e\u003cstrong\u003e\u003ca href=\"\/products\/forensics-chlorine-detector-wall-mount\" title=\"Chlorine Detector\"\u003eChlorine Detector\u003c\/a\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eChlorine (Cl2)\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e0-20 ppm\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eRelay + alarms\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003e~$799\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003cul\u003e\n\u003cli\u003eChoose the \u003cstrong\u003eChlorine Detector\u003c\/strong\u003e for continuous fixed Cl2 monitoring of water-treatment and chemical rooms.\u003c\/li\u003e\n\u003cli\u003eFor combustibles use the \u003ca href=\"\/products\/forensics-ex-lel-gas-detector-wall-mount\" title=\"EX LEL Detector\"\u003eEX LEL Detector\u003c\/a\u003e; for several gases the \u003ca href=\"\/products\/forensics-4-gas-wall-mount-monitor\" title=\"4 Gas Monitor\"\u003e4 Gas Monitor\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNeed a portable Cl2 survey tool too? Add the \u003ca href=\"\/products\/\/products\/forensics-chlorine-analyzer-cl2\" title=\"Forensics Chlorine Analyzer\"\u003eForensics Chlorine Analyzer\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"faq\"\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat does the Forensics chlorine detector monitor?\u003c\/h3\u003e\u003cp\u003eChlorine (Cl2) from 0-20 ppm, continuously, from a fixed wall-mounted head. It does not detect combustibles, oxygen or other toxics.\u003c\/p\u003e\n\u003ch3\u003eWhere should a fixed chlorine detector be mounted?\u003c\/h3\u003e\u003cp\u003eLow on the wall near the source and occupied area — chlorine is heavier than air and settles, so low mounting catches a release.\u003c\/p\u003e\n\u003ch3\u003eWhat is the relay output for?\u003c\/h3\u003e\u003cp\u003eIt triggers ventilation, remote alarms or shutdown when Cl2 reaches the set point — critical for chlorine rooms where leaks must be contained fast.\u003c\/p\u003e\n\u003ch3\u003eIs it explosion-proof?\u003c\/h3\u003e\u003cp\u003eYes — it uses an explosion-proof aluminum enclosure suitable for plant chemical rooms; confirm the rating against your area classification.\u003c\/p\u003e\n\u003ch3\u003eIs it NIST calibrated?\u003c\/h3\u003e\u003cp\u003eYes — USA NIST-traceable calibration; recalibrate periodically with chlorine calibration gas to keep readings accurate.\u003c\/p\u003e\n\u003ch3\u003ePortable or fixed chlorine detection?\u003c\/h3\u003e\u003cp\u003eThis is the fixed, continuous option for a room. For surveys and personal exposure use the portable \u003ca href=\"\/products\/\/products\/forensics-chlorine-analyzer-cl2\" title=\"Forensics Chlorine Analyzer\"\u003eForensics Chlorine Analyzer\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhy is the range only 0-20 ppm?\u003c\/h3\u003e\u003cp\u003eChlorine is dangerous at low concentrations, so a low, high-resolution range with low alarm set points is appropriate.\u003c\/p\u003e\n\u003ch3\u003eCan it control ventilation?\u003c\/h3\u003e\u003cp\u003eYes — that is a primary use of the relay output: energise room exhaust automatically when Cl2 is detected.\u003c\/p\u003e\n\u003ch3\u003eDoes it detect other gases?\u003c\/h3\u003e\u003cp\u003eNo — Cl2 only. For combustibles use the \u003ca href=\"\/products\/forensics-ex-lel-gas-detector-wall-mount\" title=\"EX LEL Detector\"\u003eEX LEL Detector\u003c\/a\u003e; for CO\/H2S\/O2\/EX the \u003ca href=\"\/products\/forensics-4-gas-wall-mount-monitor\" title=\"4 Gas Wall-Mount Monitor\"\u003e4 Gas Wall-Mount Monitor\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it in stock and how does it ship?\u003c\/h3\u003e\u003cp\u003eUse the Amazon buy button for current availability and delivery timing through our fulfillment partner.\u003c\/p\u003e\n\u003ch3\u003eDoes installation need an electrician?\u003c\/h3\u003e\u003cp\u003eIt is hard-wired; installation and relay-to-ventilation wiring should follow local electrical code and area-classification requirements.\u003c\/p\u003e\n\u003ch3\u003eHow many heads does a chlorine room need?\u003c\/h3\u003e\u003cp\u003eAt least one near each credible release point and the occupied area; larger rooms add heads, often wired to a controller for coordinated response.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#1a1a1a;border:1px solid #3a3a3a;border-radius:6px;padding:16px 18px;margin:22px 0;\"\u003e\n\u003cp style=\"margin:0 0 10px 0;color:#f5e6d3;\"\u003eReady to order the \u003cstrong\u003eForensics chlorine detector\u003c\/strong\u003e? Add it to your cart above, or check the current Amazon price below. Compare it against the rest of our \u003ca href=\"\/collections\/fixed-gas-detection-systems\" title=\"Fixed Gas Detection Systems\"\u003eFixed Gas Detection Systems\u003c\/a\u003e lineup before you buy.\u003c\/p\u003e\n\u003cp style=\"display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:0;\"\u003e\u003ca href=\"https:\/\/www.amazon.com\/dp\/B07Z8DDWXQ?tag=wcsafety04-20\" rel=\"sponsored nofollow noopener\" target=\"_blank\" style=\"display:inline-block;background:#FFD814;color:#0F1111;padding:13px 26px;text-decoration:none;font-weight:bold;border-radius:4px;border:1px solid #FCD200;\"\u003eCHECK PRICE ON AMAZON →\u003c\/a\u003e\u003cspan style=\"font-size:0.8em;color:#bdae9d;\"\u003eAs an Amazon Associate, WC Safety earns from qualifying purchases.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#1a2733;border:1px dashed #4fc3f7;padding:16px 20px;margin:30px 0 18px 0;color:#cfd8dc;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#4fc3f7;\"\u003eWhy trust this Forensics Detectors page?\u003c\/strong\u003e WC Safety is an independent industrial safety-equipment retailer serving safety managers, procurement teams and field supervisors. The specifications here are taken from the manufacturer’s published listing for Forensics Chlorine Detector and framed against \u003ca href=\"https:\/\/www.osha.gov\/laws-regs\/regulations\/standardnumber\/1910\/1910.146\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA 29 CFR 1910.146\u003c\/a\u003e and \u003ca href=\"https:\/\/www.osha.gov\/annotated-pels\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA Permissible Exposure Limits\u003c\/a\u003e. Disclosed: WC Safety earns Amazon affiliate commissions on outbound clicks; that does not influence the specs shown or our lineup.\n\u003c\/div\u003e\n\u003cdiv style=\"background:#1a2733;border-left:4px solid #4fc3f7;padding:18px 22px;margin:18px 0;color:#cfd8dc;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#4fc3f7;\"\u003eBy Steven Eaton, WC Safety Editorial\u003c\/strong\u003e — Industrial safety-equipment desk · specialization: atmospheric monitoring, gas detection and instrument selection.\u003cbr\u003e\n  \u003cstrong\u003eLast updated:\u003c\/strong\u003e \u003ctime datetime=\"2026-06-22\"\u003eJune 22, 2026\u003c\/time\u003e · \u003cstrong\u003eSources reviewed:\u003c\/strong\u003e manufacturer product listing \u0026amp; specifications, OSHA 29 CFR 1910.146, OSHA Annotated PEL tables, ACGIH Threshold Limit Values.\u003cbr\u003e\n  \u003cstrong\u003eEditorial standard:\u003c\/strong\u003e \u003cem\u003eZero sponsored listings. No manufacturer input. Specs verified against the manufacturer’s published data.\u003c\/em\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#1a2733;border-left:4px solid #4fc3f7;padding:16px 20px;margin:18px 0;color:#cfd8dc;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#4fc3f7;\"\u003eHow this page is maintained.\u003c\/strong\u003e Specifications and pricing are reviewed against the manufacturer’s current listing and re-checked whenever the lineup changes. Gas-detection guidance follows \u003ca href=\"https:\/\/www.osha.gov\/laws-regs\/regulations\/standardnumber\/1910\/1910.146\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA 1910.146\u003c\/a\u003e and \u003ca href=\"https:\/\/www.osha.gov\/annotated-pels\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA PELs\u003c\/a\u003e, cross-referenced with ACGIH TLVs.\n\u003c\/div\u003e\n\u003cdiv style=\"background:#2a2520;border-left:4px solid #ff9800;padding:16px 20px;margin:18px 0;color:#f5e6d3;font-size:0.92em;\"\u003e\n  \u003cstrong style=\"color:#ffb74d;\"\u003eDisclosure.\u003c\/strong\u003e WC Safety participates in the Amazon Associates Program and earns commissions on qualifying purchases through outbound links on this page (tag wcsafety04-20). We are not sponsored by any instrument manufacturer. This page is buyer guidance, not medical, legal or regulatory advice — confirm gas-detection requirements for your site against the applicable OSHA standard and, for commercial monitoring programs, a Certified Industrial Hygienist (CIH).\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"Product\", \"@id\": \"https:\/\/wcsafety.com\/products\/forensics-chlorine-detector-wall-mount#product\", \"name\": \"Forensics Chlorine Detector — Industrial Wall-Mount (0-20 ppm Cl2, Relay Output)\", \"description\": \"Forensics chlorine detector — industrial wall-mount Cl2 monitor, 0-20 ppm, continuous monitoring with relay output, explosion-proof and NIST calibration.\", \"sku\": \"B07Z8DDWXQ\", \"mpn\": \"FD-CL2-WM\", \"image\": [\"https:\/\/wcsafety.com\/cdn\/shop\/products\/forensics-chlorine-detector-wall-mount.jpg\"], \"brand\": {\"@type\": \"Brand\", \"name\": \"Forensics Detectors\"}, \"category\": \"Fixed Gas Detector\", \"isPartOf\": {\"@type\": \"CollectionPage\", \"@id\": \"https:\/\/wcsafety.com\/collections\/fixed-gas-detection-systems#collection\", \"name\": \"Fixed Gas Detection Systems\", \"url\": \"https:\/\/wcsafety.com\/collections\/fixed-gas-detection-systems\"}, \"isRelatedTo\": [{\"@type\": \"Product\", \"name\": \"Forensics EX LEL Gas Detector (Wall-Mount)\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-ex-lel-gas-detector-wall-mount\"}, {\"@type\": \"Product\", \"name\": \"Forensics Hydrogen Gas Detector (Wall-Mount)\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-hydrogen-gas-detector-wall-mount\"}, {\"@type\": \"Product\", \"name\": \"Forensics 4 Gas Wall-Mount Monitor\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-4-gas-wall-mount-monitor\"}], \"offers\": {\"@type\": \"Offer\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-chlorine-detector-wall-mount\", \"priceCurrency\": \"USD\", \"price\": \"799.45\", \"availability\": \"https:\/\/schema.org\/InStock\", \"seller\": {\"@type\": \"Organization\", \"name\": \"WC Safety\"}}}, {\"@type\": \"BreadcrumbList\", \"@id\": \"https:\/\/wcsafety.com\/products\/forensics-chlorine-detector-wall-mount#breadcrumb\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/wcsafety.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Gas Detectors\", \"item\": \"https:\/\/wcsafety.com\/collections\/gas-detectors\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Fixed Gas Detection Systems\", \"item\": \"https:\/\/wcsafety.com\/collections\/fixed-gas-detection-systems\"}, {\"@type\": \"ListItem\", \"position\": 4, \"name\": \"Forensics Chlorine Detector — Industrial Wall-Mount (0-20 ppm Cl2, Relay Output)\"}]}, {\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the Forensics chlorine detector monitor?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Chlorine (Cl2) from 0-20 ppm, continuously, from a fixed wall-mounted head. It does not detect combustibles, oxygen or other toxics.\"}}, {\"@type\": \"Question\", \"name\": \"Where should a fixed chlorine detector be mounted?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Low on the wall near the source and occupied area — chlorine is heavier than air and settles, so low mounting catches a release.\"}}, {\"@type\": \"Question\", \"name\": \"What is the relay output for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It triggers ventilation, remote alarms or shutdown when Cl2 reaches the set point — critical for chlorine rooms where leaks must be contained fast.\"}}, {\"@type\": \"Question\", \"name\": \"Is it explosion-proof?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — it uses an explosion-proof aluminum enclosure suitable for plant chemical rooms; confirm the rating against your area classification.\"}}, {\"@type\": \"Question\", \"name\": \"Is it NIST calibrated?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — USA NIST-traceable calibration; recalibrate periodically with chlorine calibration gas to keep readings accurate.\"}}, {\"@type\": \"Question\", \"name\": \"Portable or fixed chlorine detection?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This is the fixed, continuous option for a room. 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For combustibles use the EX LEL Detector; for CO\/H2S\/O2\/EX the 4 Gas Wall-Mount Monitor.\"}}, {\"@type\": \"Question\", \"name\": \"Is it in stock and how does it ship?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use the Amazon buy button for current availability and delivery timing through our fulfillment partner.\"}}, {\"@type\": \"Question\", \"name\": \"Does installation need an electrician?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is hard-wired; installation and relay-to-ventilation wiring should follow local electrical code and area-classification requirements.\"}}, {\"@type\": \"Question\", \"name\": \"How many heads does a chlorine room need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"At least one near each credible release point and the occupied area; larger rooms add heads, often wired to a controller for coordinated response.\"}}]}, {\"@type\": \"Organization\", \"@id\": \"https:\/\/wcsafety.com\/#org\", \"name\": \"WC Safety\", \"url\": \"https:\/\/wcsafety.com\", \"logo\": \"https:\/\/wcsafety.com\/cdn\/shop\/files\/logo.png\"}, {\"@type\": \"Person\", \"@id\": \"https:\/\/wcsafety.com\/#editor\", \"name\": \"Steven Eaton\", \"jobTitle\": \"Editorial Lead\", \"worksFor\": {\"@id\": \"https:\/\/wcsafety.com\/#org\"}, \"knowsAbout\": [\"industrial gas detection\", \"atmospheric monitoring\", \"personal protective equipment\"]}, {\"@type\": \"Brand\", \"name\": \"Forensics Detectors\"}]}\n\u003c\/script\u003e","brand":"Forensics Detectors","offers":[{"title":"Default Title","offer_id":44266968318040,"sku":"B07Z8DDWXQ","price":799.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1900\/0920\/files\/71yTG0D-SYL._AC_SL1500.jpg?v=1782133299"}],"url":"https:\/\/wcsafety.com\/collections\/chlorine-gas-detectors.oembed","provider":"WC Safety","version":"1.0","type":"link"}