{"product_id":"honeywell-north-n75004l-ammonia-methylamine-respirator-cartridge","title":"Honeywell North N75004L Ammonia \u0026 Methylamine Respirator Cartridge","description":"\u003cdiv class=\"product-description-rich\" style=\"color:#e0e0e0;line-height:1.7;\"\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=\"display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap;\"\u003e\n    \u003cspan style=\"background:#ff9800;color:#1a1a1a;font-weight:bold;padding:4px 12px;border-radius:4px;font-size:0.95em;\"\u003eEDITORIAL REVIEW: 4.2\/5\u003c\/span\u003e\n    \u003cspan style=\"color:#ffb74d;font-size:0.9em;\"\u003eWC Safety Review — Honeywell North N75004L Ammonia \u0026amp; Methylamine Cartridge\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cp style=\"margin:0 0 10px 0;\"\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Ammonia and methylamine vapor protection in agriculture, refrigeration, wastewater treatment, and chemical manufacturing on North 5500, 7700, 5400, and 7600 series respirators — where no particulate or acid gas co-hazard is present.\u003c\/p\u003e\n  \u003cp style=\"margin:0 0 10px 0;\"\u003e\u003cstrong\u003eNot For:\u003c\/strong\u003e Organic vapors, acid gases, particulate\/dust, mercury vapor, carbon monoxide, or any atmosphere requiring oxygen supply; also incompatible with 3M, Moldex, or any non-North bayonet respirator.\u003c\/p\u003e\n  \u003cp style=\"margin:0 0 10px 0;\"\u003e\u003cstrong\u003eBottom Line:\u003c\/strong\u003e A tight single-hazard cartridge for confirmed ammonia\/methylamine-only environments on North bayonet platforms — when particulate is also present, step up to the \u003ca href=\"\/products\/honeywell-north-7584p100l-ammonia-methylamine-p100-respirator-cartridge\" style=\"color:#ffd9a6;\"\u003e7584P100L ammonia\/methylamine + P100 combination cartridge\u003c\/a\u003e.\u003c\/p\u003e\n  \u003cp style=\"margin:0 0 10px 0;font-size:0.9em;color:#cbb89e;\"\u003eEditorial assessment by the WC Safety Editorial Team. WC Safety did not laboratory-test this product; scoring reflects published manufacturer specifications, application fit, compatibility, safety limitations, and category expertise.\u003c\/p\u003e\n  \u003cp style=\"margin:0;\"\u003e\u003ca href=\"\/blogs\/product-reviews\/honeywell-north-n75004l-review\" style=\"color:#ff9800;font-weight:bold;\"\u003eRead the full N75004L review\u003c\/a\u003e →\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- 1. OVERVIEW --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eHoneywell North N75004L Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell North N75004L\u003c\/strong\u003e is a NIOSH-approved \u003cstrong\u003eammonia and methylamine gas cartridge\u003c\/strong\u003e that protects against ammonia (NH₃) and methylamine vapors on North bayonet respirators. Sold as a pair, it uses the \u003cstrong\u003euniversal North bayonet connection\u003c\/strong\u003e that fits every facepiece in the North 5500 half-face, 7700 half-face, 5400 full-face, and 7600 full-face series. It is a gas-only cartridge — it contains no particulate filter media and stops no dust, mist, or fumes — and it is rated for ammonia and methylamine only, not organic vapors, acid gases, or mercury vapor.\u003c\/p\u003e\n\u003cp\u003eThe N75004L belongs to the \u003cstrong\u003eN-Series gas-only cartridge line\u003c\/strong\u003e, which includes the \u003ca href=\"\/products\/honeywell-north-n75001l-organic-vapor-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eN75001L (organic vapor)\u003c\/a\u003e, the \u003ca href=\"\/products\/honeywell-north-n75002l-acid-gas-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eN75002L (acid gas)\u003c\/a\u003e, and the \u003ca href=\"\/products\/honeywell-north-n75003l-organic-vapor-acid-gas-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eN75003L (OV + acid gas)\u003c\/a\u003e. When particulate accompanies the ammonia hazard, the correct upgrade is the \u003ca href=\"\/products\/honeywell-north-7584p100l-ammonia-methylamine-p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e7584P100L ammonia\/methylamine + P100 combination cartridge\u003c\/a\u003e. For multi-gas environments, see the \u003ca href=\"\/products\/honeywell-north-75scl-defender-multi-gas-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e75SCL Defender multi-gas cartridge\u003c\/a\u003e. To understand how gas class maps to cartridge selection, read the \u003ca href=\"\/blogs\/guides\/honeywell-north-cartridge-guide\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eHoneywell North cartridge guide\u003c\/a\u003e and the \u003ca href=\"\/blogs\/guides\/how-to-choose-a-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003ehow to choose a respirator cartridge guide\u003c\/a\u003e, or browse the full \u003ca href=\"\/collections\/honeywell-north-respirator-filters-and-cartridges\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eHoneywell North respirator filters and cartridges collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003c!-- 2. WHERE IT FITS --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eWhere the N75004L Fits in Respirator Selection\u003c\/h2\u003e\n\u003cp\u003eThe N75004L serves one purpose: ammonia and methylamine gas control on a North bayonet respirator when no other chemical co-hazard is present. Before ordering, confirm two things — that your facepiece is a North bayonet model, and that your hazard assessment shows ammonia or methylamine as the only airborne contaminant.\u003c\/p\u003e\n\u003cul style=\"line-height:1.9;padding-left:18px;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNorth bayonet + ammonia\/methylamine only\u003c\/strong\u003e → the N75004L is the correct cartridge.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNorth bayonet + ammonia + particulate\/dust\u003c\/strong\u003e → the \u003ca href=\"\/products\/honeywell-north-7584p100l-ammonia-methylamine-p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e7584P100L ammonia\/methylamine + P100 combination\u003c\/a\u003e adds particulate protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNorth bayonet + multiple gases (OV + acid gas + ammonia)\u003c\/strong\u003e → the \u003ca href=\"\/products\/honeywell-north-75scl-defender-multi-gas-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e75SCL Defender multi-gas cartridge\u003c\/a\u003e or the \u003ca href=\"\/products\/honeywell-north-75scp100l-multi-contaminant-p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e75SCP100L multi-contaminant + P100\u003c\/a\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNorth bayonet + organic vapor only\u003c\/strong\u003e → the \u003ca href=\"\/products\/honeywell-north-n75001l-organic-vapor-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eN75001L organic vapor cartridge\u003c\/a\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNorth bayonet + acid gas only\u003c\/strong\u003e → the \u003ca href=\"\/products\/honeywell-north-n75002l-acid-gas-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eN75002L acid gas cartridge\u003c\/a\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNot sure which cartridge class applies?\u003c\/strong\u003e The \u003ca href=\"\/blogs\/guides\/respirator-filter-types-explained\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003erespirator filter types explained guide\u003c\/a\u003e and the \u003ca href=\"\/blogs\/guides\/respirator-cartridge-color-chart\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003erespirator cartridge color chart\u003c\/a\u003e walk through the classification logic.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- 3. WHO SHOULD BUY --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eWho Should Buy the Honeywell North N75004L?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBuy the N75004L if\u003c\/strong\u003e you run a Honeywell North bayonet respirator and your workplace hazard assessment identifies ammonia or methylamine as the only chemical airborne hazard — common in agricultural facilities, refrigeration maintenance (NH₃ systems), wastewater treatment, aquaculture, and chemical manufacturing where ammonia is the primary gas concern.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChoose a different cartridge if:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"line-height:1.9;padding-left:18px;\"\u003e\n  \u003cli\u003eDust, mist, or aerosols also accompany the ammonia → the \u003ca href=\"\/products\/honeywell-north-7584p100l-ammonia-methylamine-p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e7584P100L (ammonia\/methylamine + P100)\u003c\/a\u003e adds full particulate filtration.\u003c\/li\u003e\n  \u003cli\u003eOrganic vapors are a co-hazard → the \u003ca href=\"\/products\/honeywell-north-75scl-defender-multi-gas-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e75SCL Defender multi-gas cartridge\u003c\/a\u003e covers multiple gas classes in one cartridge.\u003c\/li\u003e\n  \u003cli\u003eMercury vapor or chlorine are also present → the \u003ca href=\"\/products\/honeywell-north-75852p100l-mercury-vapor-chlorine-p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e75852P100L mercury vapor\/chlorine + P100 cartridge\u003c\/a\u003e.\u003c\/li\u003e\n  \u003cli\u003eYou run a 3M, Moldex, or any non-North respirator → the North bayonet is not interchangeable with other brands; North cartridges will not seat on other manufacturers' facepieces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- 4. PROTECTS AGAINST --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eWhat Does the N75004L Protect Against?\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;color:#e0e0e0;margin:16px 0;font-size:0.92em;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#2a2a2a;\"\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#ffb74d;text-align:left;\"\u003eHazard\u003c\/th\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#ffb74d;text-align:center;\"\u003eN75004L Fit\u003c\/th\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#ffb74d;text-align:left;\"\u003eBuyer Guidance\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eAmmonia (NH₃)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#81c784;\"\u003e✅ Yes\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003ePrimary protection class for this cartridge\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eMethylamine\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#81c784;\"\u003e✅ Yes\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eStructurally similar to ammonia; covered by same adsorbent\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eOrganic vapors (toluene, xylene, solvents)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#e57373;\"\u003e❌ No\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eUse \u003ca href=\"\/products\/honeywell-north-n75001l-organic-vapor-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003eN75001L\u003c\/a\u003e or \u003ca href=\"\/products\/honeywell-north-7581p100l-organic-vapor-p100-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003e7581P100L\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eAcid gases (chlorine, HCl, SO₂)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#e57373;\"\u003e❌ No\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eUse \u003ca href=\"\/products\/honeywell-north-n75002l-acid-gas-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003eN75002L\u003c\/a\u003e or \u003ca href=\"\/products\/honeywell-north-7582p100l-acid-gas-p100-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003e7582P100L\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eParticulate \/ dust \/ mist\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#e57373;\"\u003e❌ No\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eUse \u003ca href=\"\/products\/honeywell-north-7584p100l-ammonia-methylamine-p100-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003e7584P100L\u003c\/a\u003e (ammonia + P100)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eMercury vapor \/ chlorine\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#e57373;\"\u003e❌ No\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eUse \u003ca href=\"\/products\/honeywell-north-75852p100l-mercury-vapor-chlorine-p100-respirator-cartridge\" style=\"color:#4fc3f7;\"\u003e75852P100L\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eCarbon monoxide \/ oxygen deficiency\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#e57373;\"\u003e❌ No\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eRequires SCBA or supplied-air respirator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- 5. DOES NOT PROTECT + SINGLE safety callout --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eWhat the N75004L Does NOT Protect Against\u003c\/h2\u003e\n\u003cul style=\"columns:2;column-gap:30px;line-height:1.9;padding-left:18px;\"\u003e\n  \u003cli\u003eOrganic vapors (solvents)\u003c\/li\u003e\n\u003cli\u003eAcid gases (Cl₂, HCl, SO₂)\u003c\/li\u003e\n  \u003cli\u003eParticulate \/ dust \/ mist\u003c\/li\u003e\n\u003cli\u003eMercury vapor\u003c\/li\u003e\n  \u003cli\u003eFormaldehyde\u003c\/li\u003e\n\u003cli\u003eCarbon monoxide\u003c\/li\u003e\n  \u003cli\u003eHydrogen fluoride\u003c\/li\u003e\n\u003cli\u003eMulti-gas environments\u003c\/li\u003e\n  \u003cli\u003eOxygen deficiency\u003c\/li\u003e\n\u003cli\u003eIDLH atmospheres\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"background:#33121a;border:1px solid #6b1f2e;border-radius:6px;padding:12px 16px;\"\u003e\u003cstrong\u003eSafety:\u003c\/strong\u003e The N75004L is rated for ammonia and methylamine only and provides no protection against organic vapors, acid gases, particulate, or other gas classes. No cartridge supplies oxygen or protects in oxygen-deficient, unknown, or immediately dangerous to life or health (IDLH) atmospheres — those require supplied air, SCBA, or another control specified by a qualified safety professional. When dust or particulate accompanies the ammonia hazard, the \u003ca href=\"\/products\/honeywell-north-7584p100l-ammonia-methylamine-p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e7584P100L (ammonia\/methylamine + P100)\u003c\/a\u003e is the correct selection. The N75004L fits only the North bayonet platform and cannot be installed on 3M, Moldex, or any other brand of respirator.\u003c\/p\u003e\n\n\u003c!-- 6. BEST APPLICATIONS --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eBest Applications for the N75004L\u003c\/h2\u003e\n\u003ch3 style=\"color:#ffb74d;\"\u003eRefrigeration Maintenance (Anhydrous Ammonia Systems)\u003c\/h3\u003e\n\u003cp\u003eIndustrial refrigeration plants using anhydrous ammonia (R-717) generate high-concentration NH₃ release risk during maintenance, valve work, and leak response. The N75004L provides ammonia-specific vapor protection for North bayonet respirator programs at these facilities. When dust or corrosion particulate is also a concern in mechanical spaces, pair the \u003ca href=\"\/products\/honeywell-north-7584p100l-ammonia-methylamine-p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e7584P100L\u003c\/a\u003e for combined ammonia + P100 protection. Browse all North options in the \u003ca href=\"\/collections\/honeywell-north-respirator-filters-and-cartridges\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eHoneywell North respirator filters and cartridges collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eAgriculture — Confined Animal Facilities and Fertilizer Handling\u003c\/h3\u003e\n\u003cp\u003eAmmonia off-gassing in poultry houses, hog confinements, dairy barns, and anhydrous fertilizer application creates sustained NH₃ exposure. The N75004L delivers targeted ammonia protection for routine entry and short-duration tasks in these environments when the hazard assessment confirms ammonia as the primary chemical hazard and concentrations are within OSHA-permitted cartridge use limits. See the \u003ca href=\"\/blogs\/guides\/best-honeywell-north-respirator-filters-and-cartridges\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003ebest Honeywell North respirator filters and cartridges guide\u003c\/a\u003e for a broader selection overview.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eWastewater Treatment and Biogas Facilities\u003c\/h3\u003e\n\u003cp\u003eWastewater treatment plant operators and biogas facility workers frequently encounter ammonia in digester off-gas, sludge processing areas, and aeration tanks. The N75004L is a precise single-gas cartridge for these tasks where ammonia is the documented chemical hazard. Consult the \u003ca href=\"\/blogs\/guides\/how-to-choose-a-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003ecartridge selection guide\u003c\/a\u003e to confirm your specific task qualifies for cartridge-type respirator protection versus supplied air before ordering.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eChemical Manufacturing and Laboratory Use\u003c\/h3\u003e\n\u003cp\u003eProcess chemists and operators handling ammonia solutions, ammonium compounds, or methylamine derivatives in synthesis and quality control applications use the N75004L when the risk assessment identifies these gases as the sole vapor hazard. For laboratories or process lines where organic solvents and ammonia co-exist, the \u003ca href=\"\/products\/honeywell-north-75scl-defender-multi-gas-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e75SCL Defender multi-gas cartridge\u003c\/a\u003e provides broader multi-contaminant coverage on the same North bayonet platform.\u003c\/p\u003e\n\n\u003c!-- 7. PROS \/ CONS --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eHoneywell North N75004L Pros \u0026amp; Cons\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;color:#e0e0e0;margin:16px 0;font-size:0.92em;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#2a2a2a;\"\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#81c784;text-align:left;\"\u003ePros\u003c\/th\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#e57373;text-align:left;\"\u003eCons\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;vertical-align:top;\"\u003eNIOSH-approved ammonia and methylamine cartridge — targeted single-hazard protection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;vertical-align:top;\"\u003eNo particulate filtration — use 7584P100L when dust or mist is also present\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;vertical-align:top;\"\u003eUniversal North bayonet connection — fits all North 5500, 7700, 5400, and 7600 series facepieces\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;vertical-align:top;\"\u003eIncompatible with 3M, Moldex, or any non-North respirator bayonet\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;vertical-align:top;\"\u003eLower cost per pair than combination cartridges — appropriate when ammonia is the sole hazard\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;vertical-align:top;\"\u003eNo organic vapor, acid gas, or mercury vapor protection\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;vertical-align:top;\"\u003eClean single-gas design simplifies end-of-service-life change-out scheduling\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;vertical-align:top;\"\u003eNot appropriate for multi-gas environments — requires upgrade to 75SCL or 75SCP100L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- 8. COMPATIBILITY --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eCompatible Honeywell North Respirators\u003c\/h2\u003e\n\u003cp\u003eThe N75004L uses the \u003cstrong\u003euniversal North bayonet connection\u003c\/strong\u003e, which is shared by every cartridge and filter in the Honeywell North line. It is \u003cstrong\u003enot compatible\u003c\/strong\u003e with 3M bayonet, Moldex bayonet, or any other respirator manufacturer's connection system.\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;color:#e0e0e0;margin:16px 0;font-size:0.92em;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#2a2a2a;\"\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#ffb74d;text-align:left;\"\u003eRespirator\u003c\/th\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#ffb74d;text-align:left;\"\u003eType\u003c\/th\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#ffb74d;text-align:center;\"\u003eCompatible?\u003c\/th\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#ffb74d;text-align:left;\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNorth 5500 Series\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eHalf-face\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#81c784;\"\u003e✅ Yes\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eUniversal North bayonet — direct fit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNorth 7700 Series\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eHalf-face\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#81c784;\"\u003e✅ Yes\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eUniversal North bayonet — direct fit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNorth 5400 Series\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eFull-face\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#81c784;\"\u003e✅ Yes\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eUniversal North bayonet — direct fit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNorth 7600 Series\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eFull-face\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#81c784;\"\u003e✅ Yes\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eUniversal North bayonet — direct fit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003e3M bayonet respirators (6000, 6500, 7500, 7800S, etc.)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eHalf\/Full-face\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#e57373;\"\u003e❌ No\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eDifferent bayonet system — will not seat\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eMoldex bayonet respirators\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eHalf\/Full-face\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;text-align:center;color:#e57373;\"\u003e❌ No\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eDifferent bayonet system — will not seat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size:0.9em;color:#b0bec5;\"\u003eThe North bayonet connection is brand-specific and not interchangeable with other manufacturers' systems. Browse the full range of compatible cartridges in the \u003ca href=\"\/collections\/honeywell-north-respirator-filters-and-cartridges\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eHoneywell North respirator filters and cartridges collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003c!-- 9. COMPARISON TABLE --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eN75004L vs Other Honeywell North Gas Cartridges and Filters\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;color:#e0e0e0;margin:16px 0;font-size:0.9em;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#2a2a2a;\"\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#ffb74d;text-align:left;\"\u003eCartridge \/ Filter\u003c\/th\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#ffb74d;text-align:left;\"\u003eGas Protection\u003c\/th\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#ffb74d;text-align:left;\"\u003eParticulate\u003c\/th\u003e\n  \u003cth style=\"padding:10px 12px;border:1px solid #333;color:#ffb74d;text-align:left;\"\u003eChoose If\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003e\u003cstrong\u003eN75004L\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eAmmonia \/ methylamine only\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNone\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNH₃ or methylamine, no particulate\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003e\u003ca href=\"\/products\/honeywell-north-7584p100l-ammonia-methylamine-p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e7584P100L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eAmmonia \/ methylamine\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eP100\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNH₃ + dust, mist, or fumes also present\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003e\u003ca href=\"\/products\/honeywell-north-n75001l-organic-vapor-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eN75001L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eOrganic vapor only\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNone\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eSolvent vapors, no ammonia\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003e\u003ca href=\"\/products\/honeywell-north-n75002l-acid-gas-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eN75002L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eAcid gas only\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNone\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eAcid gases, no ammonia\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003e\u003ca href=\"\/products\/honeywell-north-n75003l-organic-vapor-acid-gas-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eN75003L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eOV + acid gas\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNone\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eOV and acid gas co-hazard, no particulate\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003e\u003ca href=\"\/products\/honeywell-north-75scl-defender-multi-gas-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e75SCL\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eMulti-gas (OV + AG + NH₃ + more)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNone\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eMultiple gas classes in one environment\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003e\u003ca href=\"\/products\/honeywell-north-75scp100l-multi-contaminant-p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e75SCP100L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eMulti-gas (OV + AG + NH₃ + more)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eP100\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eMulti-gas + particulate in same task\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003e\u003ca href=\"\/products\/honeywell-north-7580p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e7580P100\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNone\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eP100\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eParticulate only, no gas hazard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- 10. 1:1 COMPARISONS --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eN75004L vs 7584P100L\u003c\/h2\u003e\n\u003cp\u003eThis is the most common ammonia cartridge purchase decision in the North line. Both protect against ammonia and methylamine, but the \u003ca href=\"\/products\/honeywell-north-7584p100l-ammonia-methylamine-p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e7584P100L\u003c\/a\u003e adds a P100 particulate filter layer — making it the correct choice when dust, aerosols, or fumes accompany the ammonia hazard. In agricultural settings, refrigeration plant maintenance areas with corrosion debris, or any environment where both gas and particulate are present, the 7584P100L is the safer selection. If your hazard assessment confirms ammonia or methylamine as the only contaminant with no particulate component, the N75004L delivers the same NH₃ protection at a lower cost per pair.\u003c\/p\u003e\n\n\u003ch2 style=\"color:#ff9800;\"\u003eN75004L vs 75SCL Defender\u003c\/h2\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/honeywell-north-75scl-defender-multi-gas-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e75SCL Defender\u003c\/a\u003e is a broad-spectrum multi-gas cartridge that covers organic vapor, acid gas, ammonia, methylamine, and additional gas classes in one cartridge, making it the right tool when multiple distinct chemical hazards are present in the same work environment. Choose the N75004L when ammonia or methylamine is the sole documented gas hazard and you want a simpler, lower-cost cartridge with straightforward end-of-service-life management. Choose the 75SCL when task analysis reveals mixed chemical exposures or when a single cartridge needs to cover multiple process areas. Consult the \u003ca href=\"\/blogs\/guides\/honeywell-north-cartridge-guide\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eHoneywell North cartridge guide\u003c\/a\u003e for the full decision framework.\u003c\/p\u003e\n\n\u003ch2 style=\"color:#ff9800;\"\u003eN75004L vs N75001L (Organic Vapor)\u003c\/h2\u003e\n\u003cp\u003eThe N75004L and the \u003ca href=\"\/products\/honeywell-north-n75001l-organic-vapor-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eN75001L\u003c\/a\u003e are both gas-only N-Series cartridges on the same North bayonet platform, but they protect against completely different chemical classes. The N75001L uses activated carbon adsorbent rated for organic vapor (solvents, hydrocarbons, ketones); the N75004L uses a different adsorbent specifically rated for ammonia and methylamine. The two are not interchangeable — select the cartridge that matches the chemical class identified in your workplace hazard assessment. See the \u003ca href=\"\/blogs\/guides\/respirator-cartridge-color-chart\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003erespirator cartridge color chart\u003c\/a\u003e to verify NIOSH color coding for each class.\u003c\/p\u003e\n\n\u003c!-- 11. QUICK ANSWERS --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eHoneywell North N75004L Quick Answers\u003c\/h2\u003e\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhat is the Honeywell North N75004L?\u003c\/h3\u003e\n\u003cp\u003eThe Honeywell North N75004L is a NIOSH-approved ammonia and methylamine gas cartridge for the North bayonet respirator platform. It protects against ammonia (NH₃) and methylamine vapors only — it contains no particulate filter media and provides no protection against organic vapors, acid gases, or other chemical classes. It is sold as a pair and fits all North 5500, 7700, 5400, and 7600 series facepieces via the universal North bayonet connection.\u003c\/p\u003e\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhat respirators does the N75004L fit?\u003c\/h3\u003e\n\u003cp\u003eThe N75004L fits all Honeywell North respirators using the universal North bayonet connection: the North 5500 half-face series, the North 7700 half-face series, the North 5400 full-face series, and the North 7600 full-face series. It is not compatible with 3M bayonet, Moldex bayonet, or any other brand's connection system.\u003c\/p\u003e\n\u003ch3 style=\"color:#ffb74d;\"\u003eDoes the N75004L protect against dust or particulate?\u003c\/h3\u003e\n\u003cp\u003eNo. The N75004L is a gas-only cartridge with no particulate filter media. When airborne dust, mist, or aerosols accompany the ammonia hazard — as is common in agricultural or refrigeration maintenance settings — the 7584P100L (ammonia\/methylamine + P100) is the correct combination cartridge selection.\u003c\/p\u003e\n\u003ch3 style=\"color:#ffb74d;\"\u003eDoes the N75004L protect against organic vapors or solvents?\u003c\/h3\u003e\n\u003cp\u003eNo. The N75004L is rated for ammonia and methylamine only. Its adsorbent is specific to that chemical class and will not adsorb organic vapors such as toluene, xylene, or acetone. For organic vapor protection on a North bayonet respirator, use the N75001L or the 7581P100L.\u003c\/p\u003e\n\u003ch3 style=\"color:#ffb74d;\"\u003eHow many cartridges come in the N75004L package?\u003c\/h3\u003e\n\u003cp\u003eThe N75004L is sold as one pair — two cartridges — the standard quantity for a dual-cartridge half-face or full-face respirator. Confirm the current pack quantity on the listing before placing bulk orders.\u003c\/p\u003e\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhat is the NIOSH approval class for the N75004L?\u003c\/h3\u003e\n\u003cp\u003eThe N75004L is NIOSH-approved for ammonia and methylamine under 42 CFR Part 84. It is not rated for particulate (N\/R\/P-series), organic vapor (OV), acid gas (AG), or mercury vapor. The NIOSH approval class applies only to the chemical hazards for which it is tested and listed.\u003c\/p\u003e\n\u003ch3 style=\"color:#ffb74d;\"\u003eCan I use the N75004L in an agricultural ammonia environment?\u003c\/h3\u003e\n\u003cp\u003eYes — agricultural facilities with confirmed ammonia vapor as the primary chemical hazard (poultry houses, hog confinement barns, anhydrous fertilizer handling) are a direct application for the N75004L on North bayonet respirators, provided concentrations are within OSHA-permitted cartridge use limits and the hazard assessment excludes other chemical co-hazards. If significant particulate is also present, use the 7584P100L combination cartridge instead.\u003c\/p\u003e\n\n\u003c!-- 12. SPECIFICATIONS --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eHoneywell North N75004L Specifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;background:#1a1a1a;color:#e0e0e0;margin:16px 0;font-size:0.92em;\"\u003e\u003ctbody\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;width:40%;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eHoneywell North\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;\"\u003eModel \/ SKU \/ MPN\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eN75004L\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;\"\u003eNIOSH Approval\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNIOSH-approved — Ammonia \/ Methylamine (42 CFR Part 84)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;\"\u003eGas \/ Vapor Protection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eAmmonia (NH₃) and methylamine only\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;\"\u003eParticulate Protection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;\"\u003ePlatform \/ Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eUniversal North bayonet (fits North 5500, 7700, 5400, 7600 series)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eGas-only cartridge (no filter media)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;\"\u003eProduct Series\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eNorth N-Series gas-only cartridges\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;\"\u003ePackage Quantity\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003e1 pair (2 cartridges)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;\"\u003ePrice\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003e$20.55 (confirm current price on listing)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;\"\u003ePurchase Path\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003eAvailable via Amazon (affiliate link)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#222;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;font-weight:600;\"\u003eReplacement Interval\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #333;\"\u003ePer employer's change-out schedule or upon breakthrough detection — per OSHA 1910.134\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003c!-- 13. HELPFUL BUYING GUIDES --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eHelpful Buying Guides\u003c\/h2\u003e\n\u003cul style=\"line-height:1.9;padding-left:18px;\"\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/honeywell-north-cartridge-guide\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eHoneywell North Cartridge Guide — Full Platform Overview\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/best-honeywell-north-respirator-filters-and-cartridges\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eBest Honeywell North Respirator Filters and Cartridges\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/how-to-choose-a-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eHow to Choose a Respirator Cartridge\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/respirator-filter-types-explained\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eRespirator Filter Types Explained\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/respirator-cartridge-color-chart\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eRespirator Cartridge Color Chart — NIOSH Class Reference\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/p100-vs-n95-difference-which-do-you-need\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eP100 vs N95 — What's the Difference?\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/guides\/organic-vapor-vs-p100\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003eOrganic Vapor vs P100 — Which Do You Need?\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- 14. FAQ --\u003e\n\u003ch2 style=\"color:#ff9800;\"\u003eHoneywell North N75004L Frequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhat does the Honeywell North N75004L protect against?\u003c\/h3\u003e\n\u003cp\u003eThe N75004L protects against ammonia (NH₃) and methylamine vapors only. It is a NIOSH-approved gas-only cartridge with no particulate filter media and provides no protection against organic vapors, acid gases, mercury vapor, or other chemical classes. Use it only when ammonia or methylamine has been identified as the sole airborne chemical hazard in a hazard assessment.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eDoes the N75004L fit 3M or Moldex respirators?\u003c\/h3\u003e\n\u003cp\u003eNo. The N75004L uses the North bayonet connection, which is brand-specific. It will not seat on 3M bayonet respirators (6000, 6500, 7500, 7800S series), Moldex bayonet respirators, or any other manufacturer's facepiece. It is compatible only with Honeywell North 5500, 7700, 5400, and 7600 series respirators.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eIs the N75004L a combination cartridge?\u003c\/h3\u003e\n\u003cp\u003eNo. The N75004L is a gas-only cartridge rated for ammonia and methylamine. It contains no P100 or other particulate filter layer. When particulate hazards accompany the ammonia, the 7584P100L is the correct combination cartridge — it provides the same ammonia\/methylamine gas protection with the addition of P100 particulate filtration.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eCan the N75004L be used for refrigeration plant ammonia exposure?\u003c\/h3\u003e\n\u003cp\u003eYes — for tasks with confirmed ammonia vapor as the documented chemical hazard and no significant particulate co-hazard, the N75004L is an appropriate single-gas cartridge selection for North bayonet respirator programs in refrigeration facilities. When dust or mechanical debris is also present, use the 7584P100L instead. All cartridge use must comply with OSHA 1910.134 requirements including hazard assessment and written respiratory protection program.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhat is the difference between the N75004L and the 7584P100L?\u003c\/h3\u003e\n\u003cp\u003eBoth cartridges protect against ammonia and methylamine on the North bayonet platform. The N75004L is a gas-only cartridge with no particulate filtration. The 7584P100L adds a P100 particulate filter layer, making it the correct choice when dust, mist, or aerosols accompany the ammonia hazard. In environments with confirmed vapor-only exposure, the N75004L costs less per pair for the same gas protection.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eDoes the N75004L protect against agricultural ammonia in poultry or hog facilities?\u003c\/h3\u003e\n\u003cp\u003eYes — ammonia off-gassing in poultry houses and hog confinement facilities is within the N75004L's protection class for North bayonet respirator programs, provided concentrations are within OSHA cartridge-use limits and particulate from animal dander or litter is not a significant co-hazard. When both ammonia gas and particulate are present, the 7584P100L combination cartridge is the appropriate selection.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eHow often should I replace the N75004L?\u003c\/h3\u003e\n\u003cp\u003eReplace the N75004L upon breakthrough — when ammonia odor is detected through the cartridge — or according to your employer's scheduled change-out interval established under a written respiratory protection program per OSHA 1910.134. Ammonia cartridges do not have a built-in end-of-service-life indicator; a documented change-out schedule based on industrial hygiene data is required.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eDoes the N75004L work for methylamine as well as ammonia?\u003c\/h3\u003e\n\u003cp\u003eYes. The N75004L is rated for both ammonia (NH₃) and methylamine by NIOSH. Methylamine is structurally similar to ammonia and is captured by the same adsorbent media used in this cartridge. This makes the N75004L appropriate for chemical manufacturing or laboratory settings where methylamine is a documented vapor hazard on a North bayonet respirator program.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eCan I use the N75004L alongside a particulate prefilter?\u003c\/h3\u003e\n\u003cp\u003eHoneywell North prefilter pads such as the 7506N95, 7506N99, or 7506R95 are designed to attach in front of combination-style 75xx cartridges — not in front of gas-only N-Series cartridges. For ammonia + particulate protection in one sealed unit, use the \u003ca href=\"\/products\/honeywell-north-7584p100l-ammonia-methylamine-p100-respirator-cartridge\" style=\"color:#4fc3f7;text-decoration:underline;\"\u003e7584P100L\u003c\/a\u003e, which integrates a P100 layer directly into the cartridge body.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhat is the difference between the N75004L and the 75SCL Defender?\u003c\/h3\u003e\n\u003cp\u003eThe N75004L is a single-class ammonia\/methylamine cartridge suited for environments where NH₃ is the sole gas hazard. The 75SCL Defender is a multi-gas cartridge that covers organic vapor, acid gas, ammonia, methylamine, and additional classes in a single cartridge. Choose the N75004L for its lower cost when hazard assessment confirms ammonia only; choose the 75SCL when multiple distinct chemical classes are present in the same work area.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eIs the N75004L approved for wastewater treatment plant use?\u003c\/h3\u003e\n\u003cp\u003eThe N75004L is an appropriate ammonia cartridge for wastewater treatment tasks with confirmed ammonia vapor as the documented hazard in environments where cartridge-type respirator use is permitted (i.e., not IDLH, not oxygen-deficient). Digesters and sludge processing areas may involve hydrogen sulfide or other co-hazards — verify your specific task's hazard assessment before selecting a single-class cartridge over a multi-gas option like the 75SCL.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#ffb74d;\"\u003eWhat is the N75004L price?\u003c\/h3\u003e\n\u003cp\u003eThe N75004L is listed at $20.55 per pair through the Amazon affiliate link on this page (tag: wcsafety04-20). Price and availability are set by Amazon and may vary — confirm the current price on the listing before ordering.\u003c\/p\u003e\n\n\u003c!-- 15. E-E-A-T FOOTER --\u003e\n\u003cdiv style=\"border-top:1px solid #444;margin-top:28px;padding-top:16px;font-size:0.9em;color:#b0bec5;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;\"\u003e\u003cstrong\u003eWritten by Steven Eaton\u003c\/strong\u003e, WC Safety Editorial — industrial PPE and respiratory protection specialist with experience across agriculture, chemical manufacturing, and industrial hygiene compliance.\u003c\/p\u003e\n  \u003cp style=\"margin:0 0 6px 0;\"\u003e\u003cstrong\u003eReviewed by:\u003c\/strong\u003e WC Safety Editorial Team for NIOSH classification accuracy, compatibility accuracy, and cartridge selection guidance.\u003c\/p\u003e\n  \u003cp style=\"margin:0;\"\u003eCartridge class selection must follow a workplace hazard assessment and a written respiratory protection program per OSHA 1910.134. Ammonia cartridges without an ESLI require a documented change-out schedule — consult a qualified industrial hygienist to establish service-life limits for your specific exposure conditions. The American Industrial Hygiene Association (AIHA) publishes guidance on cartridge change-out scheduling methodologies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:0.85em;color:#888;margin-top:14px;\"\u003eWC Safety is an Amazon Associate. We may earn a commission on qualifying purchases at no additional cost to you. Pricing and availability are set by Amazon and may vary.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Honeywell North","offers":[{"title":"Default Title","offer_id":43975052427352,"sku":"N75004L","price":20.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1900\/0920\/files\/61RaEU95fBL.jpg?v=1775893888","url":"https:\/\/wcsafety.com\/products\/honeywell-north-n75004l-ammonia-methylamine-respirator-cartridge","provider":"WC Safety","version":"1.0","type":"link"}