Honeywell North 7584P100L Ammonia Methylamine P100 Respirator Cartridge

Honeywell North 7584P100L Overview

The Honeywell North 7584P100L is a NIOSH-approved ammonia/methylamine + P100 combination cartridge that provides simultaneous protection against ammonia and methylamine vapors and captures ≥99.97% of oil and non-oil airborne particles — dust, mist, and fume — on North bayonet respirators. It is sold as a pair and threads onto the same universal North bayonet connection used by every cartridge and filter in the 75-series line. Buy this cartridge when your workplace hazard assessment identifies ammonia or methylamine gas alongside a particulate hazard and your respirator is a North 5500, 7700, 5400, or 7600 facepiece.

This is a specialized combination cartridge — it is not rated for organic vapors, acid gases, or mercury. When only ammonia and methylamine gas protection is needed with no particulate hazard, the gas-only N75004L ammonia/methylamine cartridge is the lighter and lower-cost option. For organic vapor plus P100 protection, see the 7581P100L (OV/P100). To understand how to match cartridge class to hazard, read the Honeywell North cartridge guide and the how to choose a respirator cartridge guide, or browse the complete Honeywell North respirator filters and cartridges collection.

Where the 7584P100L Fits in Respirator Selection

Before ordering, confirm two things: that your respirator is a North 5500, 7700, 5400, or 7600 facepiece (not any other brand), and that your hazard assessment specifically calls out ammonia or methylamine gas alongside a particulate hazard. The 7584P100L is purpose-built for that combination — it is not a general-purpose or multi-gas cartridge.

• Ammonia or methylamine + particulate co-hazard → the 7584P100L is the correct cartridge.
• Ammonia or methylamine only, no particulate → the lighter N75004L gas-only cartridge reduces breathing resistance.
• Organic vapor + particulate → the 7581P100L (OV/P100).
• Acid gas + particulate → the 7582P100L (acid gas/P100).
• OV + acid gas + particulate → the 7583P100L (OV/AG/P100).
• Broadest multi-contaminant coverage → the 75SCP100L multi-contaminant cartridge.
• Not sure which class you need? The respirator filter types explained guide and the respirator cartridge color chart walk through gas classes and NIOSH color codes.

Who Should Buy the Honeywell North 7584P100L?

Buy the 7584P100L if you run a North 5500, 7700, 5400, or 7600 respirator and your hazard assessment confirms ammonia or methylamine gas exposure alongside airborne dust, mist, or fume — such as in refrigeration maintenance, agricultural chemical work, wastewater operations, or fertilizer handling where both gas and particulate are simultaneously present.

Choose a different cartridge if:

• Your hazard is ammonia only with no dust or particulate → the N75004L gas-only cartridge offers lower breathing resistance at lower cost.
• Your hazard is organic vapors (solvents, coatings) + particulate → the 7581P100L (OV/P100).
• Your hazard is acid gases + particulate → the 7582P100L (acid gas/P100).
• You need particulate only with no gas protection → the 7580P100 P100 cartridge or the 75FFP100 P100 filter.
• You need multi-contaminant coverage → the 75SCP100L or the gas-only 75SCL Defender.
• You use a non-North respirator → the 7584P100L is mechanically incompatible with 3M, Moldex, and all other brands; use a cartridge designed for your facepiece's connection system.

What Does the 7584P100L Protect Against?

What the 7584P100L Does NOT Protect Against

• Organic vapors (solvents)
• Acid gases (HCl, SO₂, Cl₂)
• Hydrogen fluoride (HF)
• Mercury vapor
• Carbon monoxide
• Formaldehyde
• Oxygen deficiency
• Unknown atmospheres
• IDLH conditions
• Supplied-air requirements

Safety: The 7584P100L protects against ammonia, methylamine, and P100 particulate only — it does not protect against organic vapors, acid gases, carbon monoxide, or any other gas class, and no cartridge adds oxygen to the breathing air. Oxygen-deficient, unknown, and immediately dangerous to life or health (IDLH) atmospheres require supplied air, SCBA, or another solution specified by a qualified safety professional. Use only on North 5500, 7700, 5400, or 7600 respirators; do not attempt to force-fit this cartridge onto non-North facepieces. Cartridge selection must be based on a written hazard assessment and respiratory protection program per OSHA 1910.134.

Best Applications for the 7584P100L

Refrigeration Plant Maintenance

Anhydrous ammonia is the dominant refrigerant in industrial cold-storage, food processing, and ice-rink systems. Maintenance work on compressors, evaporators, and piping introduces ammonia vapor exposure alongside metallic particulate and lubricant mist. The 7584P100L's ammonia plus P100 combination covers both hazards simultaneously on North platform respirators. Confirm facepiece fit and hazard concentration levels with your safety officer before entry. See the full Honeywell North respirator filters and cartridges collection for additional options.

Agricultural Chemical Handling

Fertilizer application, anhydrous ammonia transfer, and confined-space work in silos or manure-pit proximity involve ammonia vapor with dust and biological particulate co-exposure. The 7584P100L handles both components on a single North cartridge rather than requiring separate filter attachments. Review your site's industrial hygiene data and written respiratory protection program to confirm ammonia concentrations are within the cartridge's rated service-life range before use. Consult the how to choose a respirator cartridge guide for hazard-class decision logic.

Wastewater Treatment & Municipal Utilities

Wastewater influent and sludge handling generate hydrogen sulfide and ammonia gas alongside biological aerosols and particulate matter. When the primary identified gas hazard is ammonia (and not H₂S, which requires a different cartridge class), the 7584P100L provides gas and particulate co-protection in one North-platform cartridge. Always verify with your facility's industrial hygienist that ammonia is the gas-phase concern and that concentrations are within the cartridge's service-life parameters. For a broad overview of cartridge classes, see respirator filter types explained.

Poultry Processing & Food Manufacturing

Poultry facilities use ammonia refrigeration and generate fine biological and organic dust throughout processing. Workers in compressor rooms, near ammonia-cooled zones, or in dry-ingredient handling areas face both hazards simultaneously — making the 7584P100L's combination protection directly applicable on North platform respirators. Browse the best Honeywell North respirator filters and cartridges guide for a full comparison of the North filter line.

Honeywell North 7584P100L Pros & Cons

Compatible Honeywell North Respirators

The 7584P100L uses the North universal bayonet connection shared by all cartridges and filters in the North 75-series line. It fits every current North facepiece — half-face and full-face — without adapters or modification.

The North bayonet is a proprietary connection — Honeywell North cartridges and filters are not interchangeable with 3M, Moldex, or any other brand's respiratory protection equipment. Browse the full Honeywell North respirator filters and cartridges collection.

7584P100L vs Other Honeywell North 758x P100 Combination Cartridges

7584P100L vs N75004L — Ammonia/Methylamine Cartridge vs Combination

The N75004L protects against ammonia and methylamine gas but contains no particulate filter media — it is a gas-only cartridge. The 7584P100L combines that same ammonia/methylamine gas protection with an integrated P100 particulate filter. Choose the N75004L when your hazard assessment confirms gas only with no significant dust, mist, or fume component — it is lighter, lower breathing resistance, and less expensive. Choose the 7584P100L when airborne particulate is a confirmed co-hazard alongside the ammonia or methylamine gas exposure. Consult the P100 vs N95 guide for particulate-class decision logic.

7584P100L vs 7583P100L — Ammonia/P100 vs OV/AG/P100

The 7583P100L covers organic vapors plus acid gases plus P100 particulate — a broader multi-gas combination — but does not include ammonia or methylamine protection. The 7584P100L covers ammonia and methylamine plus P100, but not OV or acid gas. These are distinct hazard profiles: choose based on the gases your hazard assessment identifies, not on cartridge name alone. Review the respirator cartridge color chart to verify NIOSH color codes for each protection class.

7584P100L vs 75SCP100L — Targeted vs Multi-Contaminant

The 75SCP100L is the broadest-spectrum North P100 combination cartridge, covering a wider range of gas classes including OV, acid gas, ammonia, and more alongside P100 particulate. The 7584P100L is purpose-built for ammonia and methylamine only with P100. When your hazard is definitively limited to ammonia or methylamine plus particulate, the 7584P100L is the correct targeted choice. When multiple gas classes are present or the hazard profile is complex or uncertain, the 75SCP100L's broader coverage is the safer selection — review it alongside the best Honeywell North filters and cartridges guide.

Honeywell North 7584P100L Quick Answers

What is the Honeywell North 7584P100L?

The Honeywell North 7584P100L is a NIOSH-approved combination respirator cartridge that protects against ammonia vapor, methylamine vapor, and airborne particulate at the P100 efficiency level (≥99.97% oil and non-oil). It mounts on the universal North bayonet connection used by all 5500, 7700, 5400, and 7600 series facepieces and is sold as a pair.

What respirators does the 7584P100L fit?

The 7584P100L fits all Honeywell North respirators that use the North bayonet connection: the 5500 series half-face, 7700 series half-face, 5400 series full-face, and 7600 series full-face. It does not fit 3M, Moldex, or any other brand's respirator — the North bayonet is a proprietary, brand-specific connection.

Does the 7584P100L protect against organic vapors?

No. The 7584P100L is rated for ammonia, methylamine, and P100 particulate only. Organic vapor protection requires a different cartridge class — use the 7581P100L (OV/P100) or the 7583P100L (OV/AG/P100) on North-platform respirators when solvents or coatings are the gas hazard.

What is the P100 efficiency rating on the 7584P100L?

The P100 rating means the particulate filter media captures ≥99.97% of airborne particles, including oil-based aerosols. It is the highest NIOSH particulate efficiency class and is designated "oil-proof," making it suitable for environments where oil mist or aerosol is present alongside the ammonia or methylamine gas hazard.

How many cartridges are in a 7584P100L pack?

The 7584P100L is sold as one pair — two cartridges — which is the standard quantity for a dual-cartridge half-face or full-face respirator. Confirm pack quantity on the current listing before placing a bulk order.

When should I replace the 7584P100L?

Replace when you detect ammonia or methylamine odor or taste breakthrough, when the cartridge body is visibly damaged or soiled, or when your employer's scheduled change-out interval requires it under OSHA 1910.134. The P100 particulate layer should be replaced when breathing resistance increases noticeably due to particulate loading. No combination cartridge has a universal visual end-of-service-life indicator for gas — rely on a written change-out schedule established by a qualified industrial hygienist.

Is the 7584P100L the same as the N75004L?

No. The N75004L is a gas-only ammonia/methylamine cartridge with no particulate filter layer. The 7584P100L adds an integrated P100 particulate filter to the same ammonia/methylamine gas protection, making it a combination cartridge. Use the N75004L when particulate is not a confirmed co-hazard; use the 7584P100L when both gas and particulate are present.

Honeywell North 7584P100L Specifications

Helpful Buying Guides

• Honeywell North Cartridge Guide
• Best Honeywell North Respirator Filters and Cartridges
• How to Choose a Respirator Cartridge
• Respirator Filter Types Explained
• P100 vs N95 — What's the Difference?
• Respirator Cartridge Color Chart
• Best Honeywell North Cartridge for Silica Dust
• Organic Vapor vs P100 — Which Do You Need?

Honeywell North 7584P100L Frequently Asked Questions

What does the Honeywell North 7584P100L protect against?

The 7584P100L is a NIOSH-approved combination cartridge that protects against ammonia vapor, methylamine vapor, and airborne particulate at P100 efficiency (≥99.97%). It does not protect against organic vapors, acid gases, mercury, carbon monoxide, or oxygen deficiency.

Does the 7584P100L fit a North 5500 half-face respirator?

Yes. The 7584P100L uses the North universal bayonet connection and fits the North 5500 half-face, 7700 half-face, 5400 full-face, and 7600 full-face respirators. It does not fit any other brand's facepiece.

Can the 7584P100L be used on a 3M respirator?

No. The Honeywell North bayonet is a proprietary connection that is not compatible with 3M bayonet respirators. Attempting to fit a North cartridge onto a 3M facepiece — or vice versa — creates an unsecured connection and is unsafe. Use only North cartridges on North respirators.

What is the difference between the 7584P100L and the N75004L?

The N75004L is a gas-only ammonia/methylamine cartridge with no particulate filter. The 7584P100L combines the same ammonia/methylamine gas protection with an integrated P100 particulate filter. Use the N75004L when your hazard is gas only; use the 7584P100L when dust, mist, or fume is also present alongside the ammonia or methylamine hazard.

Does the 7584P100L protect against acid gases like chlorine or hydrogen chloride?

No. Acid gas protection is not included in the 7584P100L's NIOSH approval. If acid gases are present alongside particulate, use the 7582P100L (acid gas/P100). If both OV and acid gas are co-hazards, use the 7583P100L (OV/AG/P100).

Is the 7584P100L suitable for refrigeration plant ammonia exposure?

When the gas-phase hazard is ammonia and particulate is also present, the 7584P100L is the appropriate North-platform selection. Confirm with your facility's industrial hygienist that ammonia concentrations are within the cartridge's rated service-life parameters, and ensure a written respiratory protection program per OSHA 1910.134 is in place before use.

How many cartridges are included in one 7584P100L purchase?

One pair — two cartridges — is included, which is the standard quantity for a dual-cartridge half-face or full-face respirator. Confirm quantity per unit on the current listing before placing a bulk order.

What does P100 mean on the 7584P100L?

P100 is the NIOSH designation for a particulate filter that captures ≥99.97% of airborne particles and is rated for use in oil-aerosol environments (oil-proof). It is the highest NIOSH particulate efficiency class, providing a higher filtration level than P95, R95, or N95 filter media.

Can the 7584P100L be used for silica dust protection?

The P100 particulate filter in the 7584P100L captures respirable crystalline silica dust at ≥99.97% efficiency. If the silica hazard is accompanied by ammonia or methylamine gas exposure, the 7584P100L covers both. If the hazard is silica dust only with no gas co-hazard, the 7580P100 is the lower-cost, lower-resistance P100-only option. See the best respirator for silica dust guide for full selection guidance.

Does the 7584P100L protect against welding fumes?

The P100 particulate layer captures metallic fume particulate at ≥99.97% efficiency. However, welding fumes may also contain carbon monoxide or other gas-phase hazards not covered by the 7584P100L's ammonia/methylamine gas rating. A full welding-fume hazard assessment is required to confirm the 7584P100L is the appropriate cartridge — see the best respirator for welding fumes guide.

When should I replace the 7584P100L cartridge?

Replace when ammonia or methylamine odor or taste is detected through the cartridge, when breathing resistance from particulate loading increases noticeably, when the cartridge is damaged or soiled, or when your employer's scheduled change-out interval is reached. No visual indicator shows gas-phase service-life exhaustion — a written change-out schedule established by a qualified industrial hygienist is required under OSHA 1910.134.

Is the 7584P100L the right cartridge for wastewater treatment work?

When the primary identified gas hazard is ammonia and airborne particulate or aerosol is also present, the 7584P100L is the appropriate North-platform cartridge for that combination. If hydrogen sulfide is also a confirmed hazard at the site, a broader multi-gas cartridge such as the 75SCP100L may be more appropriate — confirm with your industrial hygienist.

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