{"title":"Hydrogen Cyanide (HCN) Detectors","description":"\u003c!-- gas-type subcollection: hydrogen-cyanide-detectors | smart tag = hcn-detector --\u003e\n\n\u003ch2\u003eWhich hydrogen cyanide (HCN) detector should you buy in 2026?\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eShort answer:\u003c\/strong\u003e For hydrogen cyanide, use a dedicated HCN monitor such as the \u003ca href=\"\/products\/forensics-hydrogen-cyanide-detector-hcn\" title=\"Forensics HCN Detector\"\u003eForensics HCN Detector\u003c\/a\u003e (0-50 ppm, NIST) — for fumigation, electroplating and fire overhaul, where HCN is acutely toxic and outside the 4-gas set.\u003c\/p\u003e\n\n\u003cp\u003eHydrogen cyanide (HCN) is an acutely toxic gas that interferes with the body's use of oxygen. It is a hazard in fumigation, electroplating, some chemical processes, and fire overhaul (burning plastics and foams release HCN). It needs a dedicated detector with low alarm set points.\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 gathers HCN instruments. The \u003ca href=\"\/products\/forensics-hydrogen-cyanide-detector-hcn\" title=\"Forensics HCN Detector\"\u003eForensics HCN Detector\u003c\/a\u003e reads 0-50 ppm with NIST calibration and triple alarms. For the four atmospheric gases alongside HCN, pair it with a unit from \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"Portable Gas Detectors\"\u003ePortable Gas Detectors\u003c\/a\u003e.\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 — a NIST-calibrated handheld HCN monitor\u003c\/strong\u003e\u003cbr\u003eThe \u003ca href=\"\/products\/forensics-hydrogen-cyanide-detector-hcn\" title=\"Forensics HCN Detector\"\u003eForensics HCN Detector\u003c\/a\u003e pairs a low 0-50 ppm range with NIST calibration and triple alarms — matched to HCN’s acute toxicity. \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=hydrogen+cyanide+hcn+detector\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 hydrogen cyanide detector\u003c\/h2\u003e\n\n\u003ch3\u003eLow alarms for an acute toxin\u003c\/h3\u003e\u003cp\u003eHCN is dangerous at low ppm, so set low alarm points and bump-test regularly.\u003c\/p\u003e\u003ch3\u003eKnow the sources\u003c\/h3\u003e\u003cp\u003eFumigation, electroplating, chemical processes and fire overhaul (HCN from burning plastics\/foams) are the main HCN exposures.\u003c\/p\u003e\u003ch3\u003ePlacement\u003c\/h3\u003e\u003cp\u003eHydrogen cyanide is lighter than air, so it rises and disperses upward, but acute releases are dangerous throughout a space.\u003c\/p\u003e\n\n\u003ch2\u003eHydrogen Cyanide (HCN) hazard, exposure limits \u0026amp; placement\u003c\/h2\u003e\n\n\u003cp\u003eOSHA sets a PEL around 10 ppm (with skin notation) for hydrogen cyanide, and ACGIH lists a low short-term limit. HCN is acutely toxic, so low alarm set points and reliable detection 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 hydrogen cyanide?\u003c\/h3\u003e\u003cp\u003eA dedicated HCN detector with an electrochemical sensor — a standard 4-gas monitor does not cover HCN.\u003c\/p\u003e\n\u003ch3\u003eWhere is HCN detection needed?\u003c\/h3\u003e\u003cp\u003eFumigation operations, electroplating shops, some chemical manufacturing, and fire overhaul, where burning plastics and foams release HCN.\u003c\/p\u003e\n\u003ch3\u003eWhat is the OSHA limit for HCN?\u003c\/h3\u003e\u003cp\u003eAround 10 ppm (skin) per the \u003ca href=\"https:\/\/www.osha.gov\/annotated-pels\" rel=\"noopener\" target=\"_blank\" style=\"color:#4fc3f7;\"\u003eOSHA PEL\u003c\/a\u003e, with a low ACGIH short-term limit. HCN is acutely toxic.\u003c\/p\u003e\n\u003ch3\u003eWhy is HCN so dangerous?\u003c\/h3\u003e\u003cp\u003eHydrogen cyanide blocks the body's ability to use oxygen and is lethal at relatively low concentrations, which is why dedicated detection and low alarms matter.\u003c\/p\u003e\n\u003ch3\u003eIs HCN released in fires?\u003c\/h3\u003e\u003cp\u003eYes — burning plastics, foams and synthetic materials release HCN, making it a key fire-overhaul hazard alongside carbon monoxide.\u003c\/p\u003e\n\u003ch3\u003eDo HCN sensors need calibration?\u003c\/h3\u003e\u003cp\u003eYes — bump-test with HCN calibration gas and recalibrate on schedule; electrochemical HCN sensors are consumables.\u003c\/p\u003e\n\u003ch3\u003eCan I use it for confined-space entry?\u003c\/h3\u003e\u003cp\u003eHCN 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\u003eIs HCN heavier or lighter than air?\u003c\/h3\u003e\u003cp\u003eSlightly lighter than air, but acute releases are dangerous throughout a space, so detection and ventilation both matter.\u003c\/p\u003e\n\u003ch3\u003ePortable or fixed HCN detection?\u003c\/h3\u003e\u003cp\u003eHandheld units cover surveys and exposure; fixed HCN detection exists for process areas. See \u003ca href=\"\/collections\/fixed-gas-detection-systems\" title=\"Fixed Gas Detection Systems\"\u003eFixed Gas Detection Systems\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat does the Forensics HCN Detector cover?\u003c\/h3\u003e\u003cp\u003eThe \u003ca href=\"\/products\/forensics-hydrogen-cyanide-detector-hcn\" title=\"Forensics HCN Detector\"\u003eForensics HCN Detector\u003c\/a\u003e reads 0-50 ppm HCN with NIST calibration and triple alarms.\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 hydrogen cyanide 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\/hydrogen-cyanide-detectors#collection\",\n   \"name\": \"Hydrogen Cyanide (HCN) Detectors\",\n   \"description\": \"Shop hydrogen cyanide (HCN) detectors for fumigation, electroplating and fire overhaul. Handheld HCN monitors with NIST calibration. Compare and choose.\",\n   \"url\": \"https:\/\/wcsafety.com\/collections\/hydrogen-cyanide-detectors\",\n   \"isPartOf\": {\n    \"@type\": \"WebSite\",\n    \"name\": \"WC Safety\",\n    \"url\": \"https:\/\/wcsafety.com\"\n   },\n   \"breadcrumb\": {\n    \"@id\": \"https:\/\/wcsafety.com\/collections\/hydrogen-cyanide-detectors#breadcrumb\"\n   }\n  },\n  {\n   \"@type\": \"FAQPage\",\n   \"mainEntity\": [\n    {\n     \"@type\": \"Question\",\n     \"name\": \"What detects hydrogen cyanide?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"A dedicated HCN detector with an electrochemical sensor — a standard 4-gas monitor does not cover HCN.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Where is HCN detection needed?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Fumigation operations, electroplating shops, some chemical manufacturing, and fire overhaul, where burning plastics and foams release HCN.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"What is the OSHA limit for HCN?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Around 10 ppm (skin) per the OSHA PEL, with a low ACGIH short-term limit. HCN is acutely toxic.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Why is HCN so dangerous?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Hydrogen cyanide blocks the body's ability to use oxygen and is lethal at relatively low concentrations, which is why dedicated detection and low alarms matter.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Is HCN released in fires?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Yes — burning plastics, foams and synthetic materials release HCN, making it a key fire-overhaul hazard alongside carbon monoxide.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Do HCN sensors need calibration?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Yes — bump-test with HCN calibration gas and recalibrate on schedule; electrochemical HCN sensors are consumables.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Can I use it for confined-space entry?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"HCN 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\": \"Is HCN heavier or lighter than air?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Slightly lighter than air, but acute releases are dangerous throughout a space, so detection and ventilation both matter.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"Portable or fixed HCN detection?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Handheld units cover surveys and exposure; fixed HCN detection exists for process areas. See Fixed Gas Detection Systems.\"\n     }\n    },\n    {\n     \"@type\": \"Question\",\n     \"name\": \"What does the Forensics HCN Detector cover?\",\n     \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"The Forensics HCN Detector reads 0-50 ppm HCN with NIST calibration and triple alarms.\"\n     }\n    }\n   ]\n  },\n  {\n   \"@type\": \"BreadcrumbList\",\n   \"@id\": \"https:\/\/wcsafety.com\/collections\/hydrogen-cyanide-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\": \"Hydrogen Cyanide (HCN) Detectors\"\n    }\n   ]\n  }\n ]\n}\n\u003c\/script\u003e","products":[{"product_id":"forensics-hydrogen-cyanide-detector-hcn","title":"Forensics Hydrogen Cyanide Detector — HCN Gas Monitor (0-50 ppm, NIST)","description":"\u003c!-- PRODUCT B0F31XKHKD | 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 hydrogen cyanide detector 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-hydrogen-gas-analyzer-portable\" title=\"Forensics Hydrogen Analyzer\"\u003eForensics Hydrogen Analyzer\u003c\/a\u003e below before you order.\u003c\/div\u003e\n\n\u003ch2 id=\"top\"\u003eForensics Hydrogen Cyanide Detector — HCN Gas Monitor\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eForensics hydrogen cyanide detector\u003c\/strong\u003e measures HCN from 0-50 ppm with NIST calibration — a \u003ca href=\"\/collections\/portable-gas-detectors\" title=\"portable gas detector\"\u003eportable gas detector\u003c\/a\u003e for fumigation, plating and fire overhaul, covering an acutely toxic gas the four-gas set doesn’t.\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 Hydrogen Cyanide Detector is a handheld, NIST-calibrated HCN gas monitor (0-50 ppm) with sound, light and vibration alarms for fumigation, electroplating and fire-overhaul use.\u003c\/p\u003e\n\n\u003ch3 id=\"features\"\u003eKey features\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eMeasures hydrogen cyanide (HCN) from 0-50 ppm — an acutely toxic gas outside the 4-gas set\u003c\/li\u003e\n\u003cli\u003eUSA NIST-traceable calibration with certificate\u003c\/li\u003e\n\u003cli\u003eSound, light and vibration alarms\u003c\/li\u003e\n\u003cli\u003eUSB-rechargeable, compact 4.8 oz handheld\u003c\/li\u003e\n\u003cli\u003eFor fumigation, electroplating, fire overhaul and combustion of plastics\u003c\/li\u003e\n\u003cli\u003eCovers a hazard a standard four-gas monitor cannot detect\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 HCN detection\u003c\/li\u003e\n\u003cli\u003eNIST-traceable + certificate\u003c\/li\u003e\n\u003cli\u003eTriple alarm modes\u003c\/li\u003e\n\u003cli\u003eCompact, USB-rechargeable\u003c\/li\u003e\n\u003cli\u003eLow range for HCN's strict 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\u003eHydrogen cyanide only\u003c\/li\u003e\n\u003cli\u003eDiffusion (no pump on this model)\u003c\/li\u003e\n\u003cli\u003eSensor needs periodic replacement\u003c\/li\u003e\n\u003cli\u003ePremium single-gas price\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;\"\u003eHydrogen cyanide (HCN)\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;\"\u003eSensor\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003eElectrochemical\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;\"\u003eSound, light \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;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:8px 10px;border:1px solid #3a3a3a;\"\u003e4.8 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003ch3\u003eWhere the Forensics HCN Detector fits\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eFumigation operations\u003c\/li\u003e\n\u003cli\u003eElectroplating shops\u003c\/li\u003e\n\u003cli\u003eFire overhaul (HCN from burning plastics)\u003c\/li\u003e\n\u003cli\u003eChemical manufacturing\u003c\/li\u003e\n\u003cli\u003eConfined-space HCN risk\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 id=\"compatibility\"\u003eWhat the Forensics HCN Detector detects (and what it doesn’t)\u003c\/h2\u003e\n\n\u003cp\u003eIt detects \u003cstrong\u003ehydrogen cyanide (HCN) 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-chlorine-analyzer-cl2\" title=\"Chlorine\"\u003eChlorine\u003c\/a\u003e or \u003ca href=\"\/products\/forensics-ammonia-detector-nh3\" title=\"Ammonia\"\u003eAmmonia\u003c\/a\u003e analyzers. HCN is lighter than air and acutely toxic, so set low alarms. Bump-test with HCN calibration gas and recalibrate on schedule.\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-hydrogen-gas-analyzer-portable\" title=\"Forensics Hydrogen Analyzer\"\u003eForensics Hydrogen Analyzer\u003c\/a\u003e, \u003ca href=\"\/products\/smart-sensor-no2-gas-detector\" title=\"Smart Sensor NO2 Detector\"\u003eSmart Sensor NO2 Detector\u003c\/a\u003e, \u003ca href=\"\/products\/forensics-chlorine-analyzer-cl2\" title=\"Forensics Chlorine Analyzer\"\u003eForensics Chlorine Analyzer\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;\"\u003eStreet price\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\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-hydrogen-cyanide-detector-hcn\" title=\"Hydrogen Cyanide (HCN)\"\u003eHydrogen Cyanide (HCN)\u003c\/a\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eHCN\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;\"\u003e~$395\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-analyzer-portable\" title=\"Hydrogen (H2)\"\u003eHydrogen (H2)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"color:#e0e0e0;padding:9px;border:1px solid #3a3a3a;\"\u003eH2\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;\"\u003e~$695\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;\"\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;\"\u003e~$695\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\u003eHCN Detector\u003c\/strong\u003e for fumigation, plating and fire-overhaul hydrogen-cyanide monitoring.\u003c\/li\u003e\n\u003cli\u003eFor chlorine or SO2, see the \u003ca href=\"\/products\/forensics-chlorine-analyzer-cl2\" title=\"Chlorine\"\u003eChlorine\u003c\/a\u003e and \u003ca href=\"\/products\/forensics-sulfur-dioxide-analyzer-so2\" title=\"SO2\"\u003eSO2\u003c\/a\u003e analyzers.\u003c\/li\u003e\n\u003cli\u003eFor the four atmospheric gases, use a \u003ca href=\"\/products\/forensics-detectors-4-gas-meter-confined-space\" title=\"4 Gas Meter\"\u003e4 Gas Meter\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 HCN detector measure?\u003c\/h3\u003e\u003cp\u003eHydrogen cyanide (HCN) 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\u003eWhere is HCN detection needed?\u003c\/h3\u003e\u003cp\u003eFumigation operations, electroplating, fire overhaul (HCN is released by burning plastics and foams), and some chemical manufacturing.\u003c\/p\u003e\n\u003ch3\u003eWhat is the OSHA limit for hydrogen cyanide?\u003c\/h3\u003e\u003cp\u003eOSHA sets a PEL around 10 ppm (skin) and ACGIH lists a low short-term limit; HCN is acutely toxic, so low alarm set points matter. Confirm current values for your program.\u003c\/p\u003e\n\u003ch3\u003eIs it NIST calibrated?\u003c\/h3\u003e\u003cp\u003eYes — USA NIST-traceable calibration with certificate. Bump-test with HCN calibration gas and recalibrate on schedule.\u003c\/p\u003e\n\u003ch3\u003eDoes it have a pump?\u003c\/h3\u003e\u003cp\u003eThis model is diffusion. For a pumped specialty analyzer, see the \u003ca href=\"\/products\/forensics-chlorine-analyzer-cl2\" title=\"Forensics Chlorine Analyzer\"\u003eForensics Chlorine Analyzer\u003c\/a\u003e or \u003ca href=\"\/products\/forensics-hydrogen-gas-analyzer-portable\" title=\"Hydrogen Analyzer\"\u003eHydrogen Analyzer\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow is it powered?\u003c\/h3\u003e\u003cp\u003eUSB-rechargeable; it is a compact 4.8 oz handheld.\u003c\/p\u003e\n\u003ch3\u003eWhat alarms does it have?\u003c\/h3\u003e\u003cp\u003eSound, light and vibration alarms trigger when HCN exceeds the set point.\u003c\/p\u003e\n\u003ch3\u003eCan it detect other gases?\u003c\/h3\u003e\u003cp\u003eNo — HCN only. For chlorine use the \u003ca href=\"\/products\/forensics-chlorine-analyzer-cl2\" title=\"Chlorine Analyzer\"\u003eChlorine Analyzer\u003c\/a\u003e; for ammonia the \u003ca href=\"\/products\/forensics-ammonia-detector-nh3\" title=\"Ammonia Detector\"\u003eAmmonia Detector\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhy is HCN so dangerous?\u003c\/h3\u003e\u003cp\u003eHydrogen cyanide is acutely toxic at low concentrations and interferes with the body's ability to use oxygen, which is why dedicated detection and low alarms are essential.\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 HCN 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\u003eHCN 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\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 hydrogen cyanide 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\/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\/B0F31XKHKD?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 HCN 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-hydrogen-cyanide-detector-hcn#product\", \"name\": \"Forensics Hydrogen Cyanide Detector — HCN Gas Monitor (0-50 ppm, NIST)\", \"description\": \"Forensics hydrogen cyanide detector — handheld HCN gas monitor, 0-50 ppm with NIST calibration and triple alarms for fumigation, plating and fire overhaul.\", \"sku\": \"B0F31XKHKD\", \"mpn\": \"FD-HCN\", \"image\": [\"https:\/\/wcsafety.com\/cdn\/shop\/products\/forensics-hydrogen-cyanide-detector-hcn.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 Hydrogen Gas Analyzer (Portable)\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-hydrogen-gas-analyzer-portable\"}, {\"@type\": \"Product\", \"name\": \"Smart Sensor NO2 Gas Detector\", \"url\": \"https:\/\/wcsafety.com\/products\/smart-sensor-no2-gas-detector\"}, {\"@type\": \"Product\", \"name\": \"Forensics Chlorine (Cl2) Analyzer\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-chlorine-analyzer-cl2\"}, {\"@type\": \"Product\", \"name\": \"Forensics Sulfur Dioxide (SO2) Analyzer\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-sulfur-dioxide-analyzer-so2\"}, {\"@type\": \"Product\", \"name\": \"Forensics Ammonia (NH3) Detector\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-ammonia-detector-nh3\"}, {\"@type\": \"Product\", \"name\": \"Forensics Detectors 4 Gas Meter\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-detectors-4-gas-meter-confined-space\"}], \"offers\": {\"@type\": \"Offer\", \"url\": \"https:\/\/wcsafety.com\/products\/forensics-hydrogen-cyanide-detector-hcn\", \"priceCurrency\": \"USD\", \"price\": \"395.45\", \"availability\": \"https:\/\/schema.org\/InStock\", \"seller\": {\"@type\": \"Organization\", \"name\": \"WC Safety\"}}}, {\"@type\": \"BreadcrumbList\", \"@id\": \"https:\/\/wcsafety.com\/products\/forensics-hydrogen-cyanide-detector-hcn#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 Hydrogen Cyanide Detector — HCN Gas Monitor (0-50 ppm, NIST)\"}]}, {\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the Forensics HCN detector measure?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Hydrogen cyanide (HCN) from 0-50 ppm. It does not measure O2, LEL, CO or H2S — use a 4 gas meter for those.\"}}, {\"@type\": \"Question\", \"name\": \"Where is HCN detection needed?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Fumigation operations, electroplating, fire overhaul (HCN is released by burning plastics and foams), and some chemical manufacturing.\"}}, {\"@type\": \"Question\", \"name\": \"What is the OSHA limit for hydrogen cyanide?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"OSHA sets a PEL around 10 ppm (skin) and ACGIH lists a low short-term limit; HCN is acutely toxic, so low alarm set points matter. Confirm current values for your program.\"}}, {\"@type\": \"Question\", \"name\": \"Is it NIST calibrated?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — USA NIST-traceable calibration with certificate. Bump-test with HCN calibration gas and recalibrate on schedule.\"}}, {\"@type\": \"Question\", \"name\": \"Does it have a pump?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This model is diffusion. For a pumped specialty analyzer, see the Forensics Chlorine Analyzer or Hydrogen Analyzer.\"}}, {\"@type\": \"Question\", \"name\": \"How is it powered?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"USB-rechargeable; it is a compact 4.8 oz handheld.\"}}, {\"@type\": \"Question\", \"name\": \"What alarms does it have?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Sound, light and vibration alarms trigger when HCN exceeds the set point.\"}}, {\"@type\": \"Question\", \"name\": \"Can it detect other gases?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — HCN only. For chlorine use the Chlorine Analyzer; for ammonia the Ammonia Detector.\"}}, {\"@type\": \"Question\", \"name\": \"Why is HCN so dangerous?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Hydrogen cyanide is acutely toxic at low concentrations and interferes with the body's ability to use oxygen, which is why dedicated detection and low alarms are essential.\"}}, {\"@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 HCN 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\": \"HCN is one hazard; entry also needs O2, combustible and toxic testing with a portable 4-gas instrument.\"}}]}, {\"@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":44267025104984,"sku":"B0F31XKHKD","price":395.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1900\/0920\/files\/71CW2sA0SkL._AC_SL1500.jpg?v=1782134752"}],"url":"https:\/\/wcsafety.com\/collections\/hydrogen-cyanide-detectors.oembed","provider":"WC Safety","version":"1.0","type":"link"}