{"product_id":"moldex-7300-organic-vapor-acid-cartridge","title":"Moldex 7300 Organic Vapor Acid Cartridge","description":"\u003cdiv class=\"product-description-rich\"\u003e\n\n\u003c!-- [0] EDITORIAL REVIEW BOX --\u003e\n\u003cdiv class=\"wc-review-box\" style=\"border:2px solid #ff9800;background:#2a2520;border-radius:8px;padding:20px 24px;margin:0 0 24px 0;color:#f5e6d3;\"\u003e\n  \u003cdiv style=\"margin-bottom:12px;\"\u003e\u003cspan style=\"background:#ff9800;color:#1a1a1a;font-weight:bold;padding:4px 12px;border-radius:4px;font-size:0.95em;\"\u003eEDITORIAL REVIEW: 4.3\/5\u003c\/span\u003e\u003c\/div\u003e\n  \u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Workers facing simultaneous organic vapor and acid gas hazards — battery room technicians, lab chemists handling acids and solvents, industrial cleaners using bleach-based or acid cleaners alongside solvent degreasers, and painting contractors working in enclosed spaces with mixed chemical exposure.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eNot For:\u003c\/strong\u003e IDLH (Immediately Dangerous to Life or Health) atmospheres; oxygen-deficient spaces below 19.5% O₂; ammonia or methylamine exposure (no protection against those gases); particulate-only hazards; environments requiring SCBA or supplied-air respirators.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eBottom Line:\u003c\/strong\u003e The 7300 is the right cartridge when you need both organic vapor and acid gas coverage in a single pair — and if you also have particulate exposure, step up to the \u003ca href=\"\/products\/moldex-7367-organic-vapor-acid-gas-p100-combo-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7367 OV\/AG\/P100 combo\u003c\/a\u003e instead.\u003c\/p\u003e\n  \u003cp style=\"font-size:0.9em;color:#cbb89e;\"\u003eEditorial assessment by WC Safety. Scoring reflects manufacturer specifications, application fit, and compatibility — not laboratory testing.\u003c\/p\u003e\n  \u003cp style=\"margin-top:12px;\"\u003e\u003ca href=\"\/blogs\/product-reviews\/moldex-7300-organic-vapor-acid-gas-cartridge-review\" title=\"Read our full Moldex 7300 review\" style=\"color:#4fc3f7;font-size:0.95em;text-decoration:underline;\"\u003eRead our full Moldex 7300 review →\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- [1] OVERVIEW --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eMoldex 7300 Overview\u003c\/h2\u003e\n\u003cp\u003eThe Moldex 7300 is a NIOSH-approved organic vapor plus acid gas cartridge that mounts via bayonet twist-lock on Moldex 7000, 7800, and 9000 series respirators. Sold as a pair (2 cartridges), the 7300 combines an activated-carbon organic vapor bed with an acid gas sorbent layer in a single cartridge body — delivering dual-class protection without stacking separate cartridges. At $18.73 per pair, it is the most affordable OV\/AG option in the \u003ca href=\"\/collections\/moldex-respirator-cartridges-and-filters\" style=\"color:#4fc3f7;\"\u003eMoldex cartridge lineup\u003c\/a\u003e for workers who face both hazard classes daily.\u003c\/p\u003e\n\n\u003cdiv style=\"display:flex;gap:12px;flex-wrap:wrap;margin:16px 0;\"\u003e\n  \u003ca href=\"\/collections\/moldex-respirator-cartridges-and-filters\" style=\"background:#ff9800;color:#1a1a1a;padding:10px 20px;border-radius:4px;font-weight:bold;text-decoration:none;\"\u003eShop Moldex Cartridges\u003c\/a\u003e\n  \u003ca href=\"https:\/\/www.amazon.com\/dp\/B015MG3XZA?tag=wcsafety04-20\" style=\"background:#FF9900;color:#1a1a1a;padding:10px 20px;border-radius:4px;font-weight:bold;text-decoration:none;\" rel=\"nofollow sponsored\"\u003eBuy on Amazon →\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:0.8em;color:#888;font-style:italic;\"\u003eAffiliate disclosure: WC Safety earns a commission on qualifying Amazon purchases at no extra cost to you.\u003c\/p\u003e\n\n\u003c!-- [2] WHERE THE 7300 FITS IN RESPIRATOR SELECTION --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eWhere the Moldex 7300 Fits in Respirator Selection\u003c\/h2\u003e\n\u003cp\u003eCartridge selection starts with hazard identification. The 7300 occupies the dual-class OV\/AG slot — it is the correct choice when air monitoring or SDS review confirms both organic vapors (solvents, petroleum distillates, alcohols, aromatic hydrocarbons) and acid gases (hydrogen chloride, chlorine, sulfur dioxide, hydrogen fluoride) are present simultaneously. Single-class cartridges like the \u003ca href=\"\/products\/moldex-7100-organic-vapor-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7100 OV pair\u003c\/a\u003e or \u003ca href=\"\/products\/moldex-7200-acid-gas-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7200 acid gas pair\u003c\/a\u003e leave one hazard class completely unprotected in mixed environments.\u003c\/p\u003e\n\n\u003cp\u003eUnderstanding filter class designations is foundational to correct cartridge selection. Our guide to \u003ca href=\"\/blogs\/guides\/nuisance-relief-vs-rated-respirator-protection\" style=\"color:#4fc3f7;\"\u003enuisance relief vs. rated respirator protection\u003c\/a\u003e explains the regulatory threshold where a change-schedule cartridge like the 7300 is legally required. For environments that also involve particulate hazards — dust, fume, mist — review our \u003ca href=\"\/blogs\/guides\/p95-vs-r95-vs-p100-filter-class-guide\" style=\"color:#4fc3f7;\"\u003eP95 vs R95 vs P100 filter class guide\u003c\/a\u003e to determine whether the 7300 alone is sufficient or whether you need the 7367 combo cartridge. If you are evaluating end-of-service-life indicators across the Moldex line, the \u003ca href=\"\/blogs\/guides\/respirator-cartridge-esli-guide\" style=\"color:#4fc3f7;\"\u003eESLI guide\u003c\/a\u003e clarifies which Moldex cartridges carry active-carbon saturation indicators and which — including the 7300 — require a written change schedule instead.\u003c\/p\u003e\n\n\u003cp\u003eWhen selecting between competing brands, our \u003ca href=\"\/blogs\/guides\/best-3m-respirator-cartridges\" style=\"color:#4fc3f7;\"\u003eguide to 3M respirator cartridges\u003c\/a\u003e and the \u003ca href=\"\/blogs\/guides\/3m-vs-honeywell-north-respirator-cartridges\" style=\"color:#4fc3f7;\"\u003e3M vs. Honeywell North cartridge comparison\u003c\/a\u003e place the Moldex family in context for procurement teams evaluating multiple vendors.\u003c\/p\u003e\n\n\u003c!-- [3] WHO SHOULD BUY --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eWho Should Buy the Moldex 7300?\u003c\/h2\u003e\n\n\u003cdiv style=\"background:#2a2520;border-radius:8px;padding:20px 24px;margin:0 0 24px 0;\"\u003e\n\u003ch3 style=\"color:#ffb74d;\"\u003eBuy the Moldex 7300 if:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eYour job involves both organic solvents and acid gases in the same shift — battery room maintenance, acid cleaning followed by solvent degreasing, lab work with mixed chemical inventories.\u003c\/li\u003e\n  \u003cli\u003eYou already use a \u003ca href=\"\/products\/moldex-7000-series-half-mask-respirator-7001-7002-7003\" style=\"color:#4fc3f7;\"\u003eMoldex 7000 series half-mask\u003c\/a\u003e or \u003ca href=\"\/products\/moldex-9000-series-full-face-respirator-9001-9002-9003\" style=\"color:#4fc3f7;\"\u003eMoldex 9000 series full-face respirator\u003c\/a\u003e and need dual-class cartridges to match.\u003c\/li\u003e\n  \u003cli\u003eYou want a pair (2 cartridges) for both cartridge ports on a standard half-mask at $18.73 — rather than buying two single units.\u003c\/li\u003e\n  \u003cli\u003eAir monitoring confirms OV and AG concentrations are below IDLH and within the APF of a half-face or full-face air-purifying respirator.\u003c\/li\u003e\n  \u003cli\u003eYour written change schedule (required by OSHA in the absence of ESLI) is already in place.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eDo NOT buy the Moldex 7300 if:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eYou face only organic vapors with no acid gas component — the \u003ca href=\"\/products\/moldex-7100-organic-vapor-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7100 OV pair\u003c\/a\u003e is the more cost-efficient choice at $19.09.\u003c\/li\u003e\n  \u003cli\u003eYou only need a single replacement cartridge — the \u003ca href=\"\/products\/moldex-7307-organic-vapor-acid-gas-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7307 OV\/AG single cartridge\u003c\/a\u003e at $8.80 is the correct unit SKU.\u003c\/li\u003e\n  \u003cli\u003eYour environment also involves particulates (dust, weld fume, mist) — upgrade to the \u003ca href=\"\/products\/moldex-7367-organic-vapor-acid-gas-p100-combo-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7367 OV\/AG\/P100 combo\u003c\/a\u003e instead.\u003c\/li\u003e\n  \u003cli\u003eYou are exposed to ammonia or methylamine — those require the \u003ca href=\"\/products\/moldex-7400-ammonia-methylamine-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7400 ammonia\/methylamine cartridge\u003c\/a\u003e.\u003c\/li\u003e\n  \u003cli\u003eYou need multi-gas coverage beyond OV and AG — the \u003ca href=\"\/products\/moldex-7600-multi-gas-vapor-smart-cartridges\" style=\"color:#4fc3f7;\"\u003eMoldex 7600 multi-gas Smart cartridge\u003c\/a\u003e covers a broader hazard profile with an ESLI.\u003c\/li\u003e\n  \u003cli\u003eThe atmosphere is oxygen-deficient or at or above IDLH levels — air-purifying respirators are not suitable; supplied-air or SCBA is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003c!-- [4] WHAT DOES IT PROTECT AGAINST --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eWhat Does the Moldex 7300 Protect Against?\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;color:#e0e0e0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eHazard Class\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eProtection Level\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eBuyer Guidance\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eOrganic Vapors (solvents, petroleum distillates, aromatic hydrocarbons, alcohols, esters, ketones — boiling point \u0026gt;65°C)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNIOSH-approved OV; APF 10 (half-mask) \/ APF 50 (full-face)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eConfirm concentrations are below IDLH and within the assigned protection factor. Establish a written change schedule.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eAcid Gases (hydrogen chloride, chlorine, sulfur dioxide, hydrogen sulfide at low concentrations, hydrogen fluoride)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNIOSH-approved AG; APF 10 (half-mask) \/ APF 50 (full-face)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eVerify specific acid gas against the manufacturer's approval list. Change schedule required — no ESLI on the 7300.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eMixed OV + AG environments\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eFull dual-class coverage in a single cartridge body\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003ePrimary application for the 7300. Eliminates the need to use separate single-class cartridges in series.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- [5] WHAT IT DOES NOT PROTECT AGAINST --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eWhat the Moldex 7300 Does NOT Protect Against\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmmonia and methylamine\u003c\/strong\u003e — requires the \u003ca href=\"\/products\/moldex-7400-ammonia-methylamine-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7400 ammonia\/methylamine cartridge\u003c\/a\u003e or the \u003ca href=\"\/products\/moldex-7467-ammonia-methylamine-p100-combo-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7467 AM\/P100 combo\u003c\/a\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParticulates\u003c\/strong\u003e (dust, smoke, weld fume, mist, asbestos, lead) — no P-rated filter layer is present. Use the \u003ca href=\"\/products\/moldex-7367-organic-vapor-acid-gas-p100-combo-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7367 OV\/AG\/P100 combo\u003c\/a\u003e or add a \u003ca href=\"\/products\/moldex-7740-p100-particulate-filter-respirator\" style=\"color:#4fc3f7;\"\u003eMoldex 7740 P100 filter\u003c\/a\u003e where the platform supports stacking.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon monoxide, carbon dioxide, methane, and other non-NIOSH-listed gases\u003c\/strong\u003e — these pass through the activated carbon bed without adsorption.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow-boiling-point organic compounds\u003c\/strong\u003e (\u0026lt;65°C boiling point) — breakthrough occurs rapidly and may not be detectable by odor in time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNuisance-level odors where a rated cartridge is not required\u003c\/strong\u003e — the 7300 is a full regulatory cartridge, not a nuisance-relief filter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"background:#3a1a1a;border-left:4px solid #f44336;padding:16px 20px;border-radius:4px;margin:16px 0;\"\u003e\n  \u003cp style=\"color:#ffcdd2;margin:0;\"\u003e\u003cstrong\u003eSafety Notice:\u003c\/strong\u003e The Moldex 7300 is an air-purifying respirator cartridge and is NOT suitable for oxygen-deficient atmospheres (below 19.5% O₂ by volume), for concentrations at or above the IDLH level of any listed chemical, or for any atmosphere that has not been fully characterized. These conditions require supplied-air respirators or self-contained breathing apparatus (SCBA). Consult your industrial hygienist and your written respiratory protection program before deploying any air-purifying respirator.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- [6] BEST APPLICATIONS --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eBest Applications for the Moldex 7300\u003c\/h2\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eBattery Room Maintenance\u003c\/h3\u003e\n\u003cp\u003eCharging lead-acid batteries releases hydrogen sulfide and sulfuric acid mist (acid gas hazards) alongside any solvent vapors from battery service compounds. The 7300's combined OV\/AG coverage addresses both hazard classes in a single cartridge change, making it the standard choice for battery room technicians on \u003ca href=\"\/collections\/moldex-half-mask-respirator\" style=\"color:#4fc3f7;\"\u003eMoldex half-mask respirators\u003c\/a\u003e. Pair with forced ventilation and a written change schedule based on measured H₂S and H₂SO₄ concentrations.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eLaboratory Chemical Handling\u003c\/h3\u003e\n\u003cp\u003eLabs that work with both organic solvents (acetone, methanol, toluene, xylene) and inorganic acids (HCl, HF, H₂SO₄) in the same work session benefit from the 7300's dual-class protection without having to swap cartridges mid-task. The \u003ca href=\"\/products\/moldex-9000-series-full-face-respirator-9001-9002-9003\" style=\"color:#4fc3f7;\"\u003eMoldex 9000 full-face platform\u003c\/a\u003e combined with 7300 cartridges also provides eye and face protection against chemical splatter, which is particularly relevant in bench chemistry environments.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eIndustrial Cleaning Operations\u003c\/h3\u003e\n\u003cp\u003eIndustrial cleaning contracts frequently involve acid descalers or muriatic acid followed by solvent-based degreasers in the same shift. Using a single-class cartridge for each task creates a window of unprotected exposure when switching chemicals. The 7300 eliminates that gap with continuous dual-class coverage throughout the work cycle. Review our collection of \u003ca href=\"\/collections\/moldex-respirator-cartridges-and-filters\" style=\"color:#4fc3f7;\"\u003eMoldex cartridges and filters\u003c\/a\u003e to confirm the right cartridge for each specific chemical inventory your crew uses.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eSpray Painting and Coatings in Confined Spaces\u003c\/h3\u003e\n\u003cp\u003eMany industrial coatings and primers release both organic vapor solvents and acid-catalyzed isocyanate byproducts or acid hardeners. The 7300 is appropriate for OV\/AG environments where particulate loading is low; if the coating also produces significant aerosol mist or spray particles, specify the \u003ca href=\"\/products\/moldex-7367-organic-vapor-acid-gas-p100-combo-cartridge\" style=\"color:#4fc3f7;\"\u003e7367 OV\/AG\/P100 combo\u003c\/a\u003e rather than the 7300 alone. Proper \u003ca href=\"\/blogs\/guides\/nuisance-relief-vs-rated-respirator-protection\" style=\"color:#4fc3f7;\"\u003edistinction between nuisance and rated protection\u003c\/a\u003e is critical in confined-space painting scenarios.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eChemical Manufacturing and Process Operations\u003c\/h3\u003e\n\u003cp\u003eBatch chemical processing — particularly in pharmaceutical, specialty chemical, and fine chemical plants — regularly exposes workers to both organic intermediates and acidic reagents during the same unit operation. The 7300 provides a reliable, cost-effective dual-class cartridge for routine process monitoring, sampling, and maintenance tasks where full-face supplied-air protection is not warranted. For higher-concentration or unknown-mixture environments, consult an industrial hygienist and consider whether the \u003ca href=\"\/products\/moldex-7600-multi-gas-vapor-smart-cartridges\" style=\"color:#4fc3f7;\"\u003e7600 multi-gas Smart cartridge\u003c\/a\u003e with its ESLI is more appropriate.\u003c\/p\u003e\n\n\u003c!-- [7] PROS \/ CONS --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003ePros and Cons\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;color:#e0e0e0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"color:#4caf50;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003ePros\u003c\/th\u003e\n      \u003cth style=\"color:#f44336;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eCons\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eDual OV + acid gas coverage in one cartridge — no stacking required\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNo ESLI — OSHA-mandated written change schedule required\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eSold as a pair ($18.73) — most economical OV\/AG pair in the Moldex line\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNo particulate protection — add 7367 combo or separate P100 filter for dusty environments\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNIOSH-approved; meets OSHA 29 CFR 1910.134 requirements\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eDoes not protect against ammonia, methylamine, CO, or non-listed gases\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eBayonet twist-lock — tool-free field replacement on compatible Moldex platforms\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eMoldex-only fit — incompatible with 3M, MSA, Honeywell North respirators\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNIOSH standard color-coding for easy field identification\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNo single-unit retail option at this SKU — buy 7307 for single-cartridge replacement\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- [8] COMPATIBLE RESPIRATORS --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eCompatible Moldex Respirators\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;color:#e0e0e0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eRespirator Model\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eType\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eCompatible?\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eNotes\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e\u003ca href=\"\/products\/moldex-7000-series-half-mask-respirator-7001-7002-7003\" style=\"color:#4fc3f7;\"\u003eMoldex 7000 Series (7001, 7002, 7003)\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eHalf-mask\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;color:#4caf50;\"\u003eYes\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003ePrimary platform. Bayonet twist-lock connection. S\/M\/L sizes.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eMoldex 7800 Series\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eHalf-mask (premium)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;color:#4caf50;\"\u003eYes\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eSame bayonet system as 7000 series.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e\u003ca href=\"\/products\/moldex-9000-series-full-face-respirator-9001-9002-9003\" style=\"color:#4fc3f7;\"\u003eMoldex 9000 Series (9001, 9002, 9003)\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eFull-face\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;color:#4caf50;\"\u003eYes\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eAPF increases to 50. Provides eye\/face chemical splash protection. S\/M\/L sizes.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e3M, MSA, Honeywell North, Scott respirators\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eAny\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;color:#f44336;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eIncompatible bayonet interface. Do not attempt cross-brand cartridge installation.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eThe Moldex 7300 does NOT fit any non-Moldex respirator.\u003c\/strong\u003e Cartridge thread and bayonet geometries are brand-specific and are not interchangeable across manufacturers. Installing a Moldex cartridge on a non-Moldex facepiece will result in an undetected air leak and no chemical protection.\u003c\/p\u003e\n\n\u003c!-- [9] IN-FAMILY COMPARISON --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eMoldex 7300 vs Other Moldex Cartridges\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;color:#e0e0e0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eSKU\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eProtection\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003ePack\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003ePrice\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eESLI\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eBest For\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e\u003ca href=\"\/products\/moldex-7100-organic-vapor-cartridge\" style=\"color:#4fc3f7;\"\u003e7100\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eOV only\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003ePair\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e$19.09\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eSolvent-only environments with no acid gas\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;font-weight:bold;color:#ff9800;\"\u003e7300 (this product)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eOV + AG\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003ePair\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e$18.73\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eMixed OV + acid gas; battery rooms, labs, industrial cleaning\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e\u003ca href=\"\/products\/moldex-7200-acid-gas-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003e7200\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eAG only\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003ePair\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e$36.23\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eAcid-gas-only environments with no organic solvent component\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e\u003ca href=\"\/products\/moldex-7367-organic-vapor-acid-gas-p100-combo-cartridge\" style=\"color:#4fc3f7;\"\u003e7367\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eOV + AG + P100\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eSet\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e$11.62\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eMixed OV\/AG + particulate hazards; spray painting, remediation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e\u003ca href=\"\/products\/moldex-7400-ammonia-methylamine-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003e7400\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eAmmonia \/ Methylamine\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003ePair\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e$33.58\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eRefrigeration systems, agriculture, ammonia handling\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e\u003ca href=\"\/products\/moldex-7600-multi-gas-vapor-smart-cartridges\" style=\"color:#4fc3f7;\"\u003e7600\u003c\/a\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eMulti-Gas (OV\/AG\/AM + others)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003ePair\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e$20.79\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e\u003cstrong\u003eYes (Smart)\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eUnknown or variable mixed-gas environments; ESLI required by program\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- [10] 7300 vs CLOSEST SIBLING --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eMoldex 7300 vs Moldex 7307: Pair vs. Single\u003c\/h2\u003e\n\n\u003cdiv style=\"background:#2a2520;border-radius:8px;padding:20px 24px;margin:0 0 24px 0;\"\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/moldex-7307-organic-vapor-acid-gas-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7307\u003c\/a\u003e is the identical OV\/AG cartridge sold as a single unit at $8.80 — versus the 7300's two-cartridge pair at $18.73. The 7307 exists solely for one-for-one replacement when only one cartridge on a dual-cartridge respirator needs swapping. In practice, respirator maintenance programs replace both cartridges simultaneously per a written change schedule, making the 7300 pair the correct purchase for standard replenishment.\u003c\/p\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;color:#e0e0e0;margin-top:12px;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eFactor\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003e7300 (Pair)\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003e7307 (Single)\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eUnits\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e2 cartridges\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e1 cartridge\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003ePrice\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e$18.73 ($9.37 each)\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e$8.80\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eBest for\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eStandard scheduled replacement of both ports\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eSingle-cartridge damage replacement or stocking one spare\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eBuy verdict\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;color:#4caf50;font-weight:bold;\"\u003eDefault purchase for most programs\u003c\/td\u003e\n      \u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;color:#ffb74d;\"\u003eBuy only for single-unit replacement\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp style=\"margin-top:12px;\"\u003e\u003cstrong\u003eBuy verdict:\u003c\/strong\u003e Buy the \u003cstrong\u003e7300 pair\u003c\/strong\u003e for scheduled maintenance and bulk replenishment. Buy the \u003ca href=\"\/products\/moldex-7307-organic-vapor-acid-gas-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003e7307 single\u003c\/a\u003e only when replacing one damaged cartridge or stocking a single emergency spare.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- [11] QUICK ANSWERS --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eMoldex 7300 Quick Answers\u003c\/h2\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhat respirators does the Moldex 7300 fit?\u003c\/h3\u003e\n\u003cp\u003eThe Moldex 7300 fits the Moldex 7000 series half-mask, 7800 series half-mask, and 9000 series full-face respirator. It uses Moldex's proprietary bayonet twist-lock interface and is not compatible with any non-Moldex respirator facepiece.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eDoes the Moldex 7300 protect against acid gases?\u003c\/h3\u003e\n\u003cp\u003eYes. The 7300 is a combined organic vapor plus acid gas cartridge with NIOSH approval for both protection classes. It protects against hydrogen chloride, chlorine, sulfur dioxide, hydrogen fluoride, and other NIOSH-listed acid gases simultaneously with organic vapor protection.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eHow many cartridges come in a Moldex 7300 package?\u003c\/h3\u003e\n\u003cp\u003eTwo cartridges per package. The 7300 is sold as a pair, providing both cartridges needed for a dual-port half-mask or full-face respirator. For a single replacement cartridge, order the Moldex 7307 instead.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eDoes the Moldex 7300 have an end-of-service-life indicator (ESLI)?\u003c\/h3\u003e\n\u003cp\u003eNo. The 7300 does not include an ESLI. OSHA 29 CFR 1910.134(d)(3)(iii)(B) requires employers to establish a written cartridge change schedule based on objective information such as air monitoring data and manufacturer breakthrough specifications whenever ESLI is absent.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhat is the difference between the Moldex 7300 and the 7367?\u003c\/h3\u003e\n\u003cp\u003eThe 7367 adds a P100 particulate filter layer to the same OV\/AG protection. If your environment includes dust, mist, smoke, or weld fume alongside organic vapors and acid gases, the 7367 is the correct choice. If the hazard is purely gaseous with no significant particulate loading, the 7300 pair is sufficient and slightly more economical per pair unit.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eCan the Moldex 7300 be used with a full-face respirator?\u003c\/h3\u003e\n\u003cp\u003eYes. The 7300 fits the Moldex 9000 series full-face respirator. When mounted on a full-face respirator, the assigned protection factor (APF) increases from 10 (half-mask) to 50, allowing use in environments up to 50 times the PEL. The full-face platform also provides simultaneous eye and face chemical splash protection.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eIs the Moldex 7300 NIOSH approved?\u003c\/h3\u003e\n\u003cp\u003eYes. The Moldex 7300 carries NIOSH approval for organic vapor and acid gas protection. NIOSH approval is the minimum regulatory standard required for cartridges used in OSHA-regulated respiratory protection programs under 29 CFR 1910.134.\u003c\/p\u003e\n\n\u003c!-- [12] SPECIFICATIONS --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eMoldex 7300 Specifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;color:#e0e0e0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eSpecification\u003c\/th\u003e\n      \u003cth style=\"color:#ffb74d;padding:8px;text-align:left;border-bottom:1px solid #333;\"\u003eDetail\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eSKU\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e7300\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eMoldex\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eProtection Type\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eOrganic Vapor (OV) + Acid Gas (AG)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNIOSH Approval\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003ePack Quantity\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e2 cartridges (pair)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003ePrice\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e$18.73 \/ pair\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eESLI\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNone — written change schedule required (OSHA 29 CFR 1910.134)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eConnection Type\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eMoldex bayonet twist-lock\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eCompatible Platforms\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eMoldex 7000, 7800, 9000 series\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eAPF (Half-Mask)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eAPF (Full-Face)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003e50\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eColor Coding\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eNIOSH standard for OV\/AG class\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eSingle-Unit Equivalent\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eMoldex 7307 ($8.80 each)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eUpgrade (adds P100)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #2a2a2a;\"\u003eMoldex 7367 OV\/AG\/P100 ($11.62\/set)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cdiv style=\"display:flex;gap:12px;flex-wrap:wrap;margin:16px 0;\"\u003e\n  \u003ca href=\"https:\/\/www.amazon.com\/dp\/B015MG3XZA?tag=wcsafety04-20\" style=\"background:#FF9900;color:#1a1a1a;padding:10px 20px;border-radius:4px;font-weight:bold;text-decoration:none;\" rel=\"nofollow sponsored\"\u003eBuy Moldex 7300 on Amazon →\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c!-- [13] HELPFUL BUYING GUIDES --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eHelpful Buying Guides\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/respirator-cartridge-esli-guide\" style=\"color:#4fc3f7;\"\u003eRespirator Cartridge ESLI Guide: When You Need an End-of-Service-Life Indicator\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/nuisance-relief-vs-rated-respirator-protection\" style=\"color:#4fc3f7;\"\u003eNuisance Relief vs. Rated Respirator Protection: Know the Regulatory Threshold\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/p95-vs-r95-vs-p100-filter-class-guide\" style=\"color:#4fc3f7;\"\u003eP95 vs R95 vs P100: Respirator Filter Class Explained\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/best-3m-respirator-cartridges\" style=\"color:#4fc3f7;\"\u003eBest 3M Respirator Cartridges: Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/3m-vs-honeywell-north-respirator-cartridges\" style=\"color:#4fc3f7;\"\u003e3M vs Honeywell North Respirator Cartridges: Full Comparison\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/best-respirator-cartridge-for-mercury-vapor\" style=\"color:#4fc3f7;\"\u003eBest Respirator Cartridge for Mercury Vapor\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- [14] FAQ --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eMoldex 7300 Frequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eIs the Moldex 7300 sold as a pair or as a single cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe 7300 is sold as a pair — two cartridges per package at $18.73. This provides both cartridges needed for a standard dual-port half-mask or full-face respirator. If you need a single replacement cartridge, order the \u003ca href=\"\/products\/moldex-7307-organic-vapor-acid-gas-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7307\u003c\/a\u003e at $8.80.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eDoes the Moldex 7300 protect against both organic vapor and acid gas in one cartridge?\u003c\/h3\u003e\n\u003cp\u003eYes. The 7300 combines an activated-carbon organic vapor layer with an acid gas sorbent in a single cartridge body. This eliminates the need to stack or swap cartridges when both OV and AG hazards are present in the same work environment.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhich Moldex respirator platforms accept the 7300 cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe 7300 is compatible with the \u003ca href=\"\/products\/moldex-7000-series-half-mask-respirator-7001-7002-7003\" style=\"color:#4fc3f7;\"\u003eMoldex 7000 series half-mask\u003c\/a\u003e, the Moldex 7800 series half-mask, and the \u003ca href=\"\/products\/moldex-9000-series-full-face-respirator-9001-9002-9003\" style=\"color:#4fc3f7;\"\u003eMoldex 9000 series full-face respirator\u003c\/a\u003e. It is not compatible with any respirator from another manufacturer.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhen do I need to replace the Moldex 7300 cartridge?\u003c\/h3\u003e\n\u003cp\u003eBecause the 7300 has no end-of-service-life indicator (ESLI), OSHA 29 CFR 1910.134 requires your employer to maintain a written cartridge change schedule. At a minimum, replace cartridges when any chemical odor or taste is detected through the respirator, after any exposure to concentrations above the cartridge's rated capacity, or as specified in your written respiratory protection program.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eCan I use the Moldex 7300 in a battery room?\u003c\/h3\u003e\n\u003cp\u003eYes — battery room maintenance is one of the primary applications. Lead-acid battery charging releases sulfuric acid mist (acid gas) and hydrogen sulfide (acid gas), alongside any solvent vapors from service compounds. The 7300's dual OV\/AG coverage addresses both hazard classes. Verify actual air concentrations are below IDLH and within the APF of your selected respirator platform before relying on the 7300 alone.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhat is the difference between the Moldex 7300 and the 7200?\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/moldex-7200-acid-gas-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7200\u003c\/a\u003e provides acid gas protection only at $36.23 per pair — it contains no activated-carbon organic vapor layer. The 7300 adds organic vapor protection to the same acid gas coverage at the lower price of $18.73 per pair. For mixed OV\/AG environments, the 7300 is both more protective and more cost-effective than the 7200.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eDoes the Moldex 7300 filter dust or particulates?\u003c\/h3\u003e\n\u003cp\u003eNo. The 7300 does not include a particulate filter and carries no NIOSH P-rating. For environments with both chemical vapor and particulate hazards, specify the \u003ca href=\"\/products\/moldex-7367-organic-vapor-acid-gas-p100-combo-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7367 OV\/AG\/P100 combo cartridge\u003c\/a\u003e instead.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eCan the Moldex 7300 be used for spray painting?\u003c\/h3\u003e\n\u003cp\u003eThe 7300 is appropriate for solvent-based spray painting where the hazard is purely gaseous (organic vapor solvent + any acid-catalyst off-gassing) with no significant aerosol particulate mist. If the application generates paint mist, aerosol particles, or isocyanate particulates, use the \u003ca href=\"\/products\/moldex-7367-organic-vapor-acid-gas-p100-combo-cartridge\" style=\"color:#4fc3f7;\"\u003eMoldex 7367\u003c\/a\u003e with P100 particulate protection instead.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eHow does the 7300 compare to the Moldex 7600 multi-gas cartridge?\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/moldex-7600-multi-gas-vapor-smart-cartridges\" style=\"color:#4fc3f7;\"\u003eMoldex 7600\u003c\/a\u003e covers a broader multi-gas profile (OV, AG, ammonia, and additional hazards) and includes a Smart ESLI for visual breakthrough indication. The 7300 covers OV and AG only but costs slightly less per pair. Choose the 7600 when your hazard profile extends beyond OV and AG, or when your respiratory protection program requires ESLI-equipped cartridges.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eIs the Moldex 7300 approved for hydrogen sulfide (H₂S) exposure?\u003c\/h3\u003e\n\u003cp\u003eLow-concentration H₂S falls within the acid gas class under certain NIOSH approvals. Verify the specific H₂S concentration against Moldex's current NIOSH approval certificate and your industrial hygienist's assessment before relying on the 7300 for H₂S protection. High concentrations of H₂S are immediately dangerous to life and health and require supplied-air or SCBA equipment.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eDoes the Moldex 7300 work with the Moldex 9000 full-face respirator?\u003c\/h3\u003e\n\u003cp\u003eYes. The 7300 bayonet mounts directly to the \u003ca href=\"\/products\/moldex-9000-series-full-face-respirator-9001-9002-9003\" style=\"color:#4fc3f7;\"\u003eMoldex 9000 full-face respirator\u003c\/a\u003e, raising the assigned protection factor from 10 (half-mask) to 50. This combination also provides complete eye and face protection against chemical splash — important in acid handling and laboratory environments.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhere can I buy the Moldex 7300 online?\u003c\/h3\u003e\n\u003cp\u003eThe Moldex 7300 is available on \u003ca href=\"https:\/\/www.amazon.com\/dp\/B015MG3XZA?tag=wcsafety04-20\" style=\"color:#4fc3f7;\" rel=\"nofollow sponsored\"\u003eAmazon\u003c\/a\u003e with Prime shipping, and through WC Safety's full \u003ca href=\"\/collections\/moldex-respirator-cartridges-and-filters\" style=\"color:#4fc3f7;\"\u003eMoldex cartridge and filter collection\u003c\/a\u003e for bulk and business orders.\u003c\/p\u003e\n\n\u003c!-- [15] E-E-A-T FOOTER --\u003e\n\u003cdiv style=\"border-top:1px solid #333;margin-top:32px;padding-top:16px;font-size:0.85em;color:#888;\"\u003e\n  \u003cp\u003eWritten by \u003cstrong\u003eSteven Eaton\u003c\/strong\u003e, WC Safety Editorial — Industrial hygiene \u0026amp; PPE specialist, 10+ years respiratory protection sourcing.\u003c\/p\u003e\n  \u003cp\u003eReviewed by the WC Safety Editorial Team. Last reviewed June 2026.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 0 0;\"\u003e\n  \u003ca href=\"https:\/\/www.amazon.com\/dp\/B015MG3XZA?tag=wcsafety04-20\" style=\"background:#FF9900;color:#1a1a1a;padding:10px 20px;border-radius:4px;font-weight:bold;text-decoration:none;\" rel=\"nofollow sponsored\"\u003eBuy Moldex 7300 on Amazon →\u003c\/a\u003e\n  \u003ca href=\"\/collections\/moldex-respirator-cartridges-and-filters\" style=\"background:#ff9800;color:#1a1a1a;padding:10px 20px;border-radius:4px;font-weight:bold;text-decoration:none;\"\u003eShop All Moldex Cartridges\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c!-- WCS-COMPARISON-LINKS --\u003e\n\u003cdiv style=\"background:#1a2733;border:1px solid #2a3f50;border-radius:4px;padding:20px 22px;margin:28px 0 0 0;\"\u003e\n\u003cp style=\"color:#4fc3f7;font-weight:bold;margin:0 0 10px 0;font-size:0.85em;text-transform:uppercase;letter-spacing:0.05em;\"\u003eWC Safety Comparison \u0026amp; Selection Guides\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:18px;color:#e0e0e0;line-height:1.9em;\"\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/blogs\/guides\/moldex-7300-vs-3m-6003-ov-ag-cartridge-comparison\" title=\"Moldex 7300 vs 3M 6003 OV+AG Cartridge Comparison\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eMoldex 7300 vs 3M 6003 OV+AG Cartridge Comparison\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/blogs\/guides\/moldex-7100-vs-7300-vs-7600-cartridge-upgrade-guide\" title=\"Moldex 7100 vs 7300 vs 7600 Upgrade Guide\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eMoldex 7100 vs 7300 vs 7600 Upgrade Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/blogs\/guides\/ov-vs-ov-ag-vs-multi-gas-cartridge-guide\" title=\"OV vs OV+AG vs Multi-Gas Selection Guide\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eOV vs OV+AG vs Multi-Gas Selection Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin-bottom:6px;\"\u003e\u003ca href=\"\/blogs\/guides\/esli-vs-written-change-schedule-respirator-guide\" title=\"ESLI vs Written Change Schedule Guide\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eESLI vs Written Change Schedule Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Moldex","offers":[{"title":"Default Title","offer_id":43909719392344,"sku":"Moldex 7300","price":18.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1900\/0920\/files\/614fbAtTUjL.jpg?v=1774415818","url":"https:\/\/wcsafety.com\/products\/moldex-7300-organic-vapor-acid-cartridge","provider":"WC Safety","version":"1.0","type":"link"}