3M 6004 Ammonia and Methylamine Respirator Cartridge — Bayonet, Green Band

3M 6004 Ammonia and Methylamine Respirator Cartridge overview

The 3M 6004 Ammonia and Methylamine Respirator Cartridge is a NIOSH-approved gas/vapor cartridge for 3M bayonet respirators, carrying the green NIOSH color band. It adsorbs ammonia (NH3) and methylamine vapor and twist-locks onto 3M reusable half masks and full facepieces — the dedicated, lowest-cost cartridge for that specific exposure. See our how to choose a respirator cartridge guide and respirator cartridge color chart to confirm your exposure before ordering.

It is a gas/vapor cartridge only — it has no particulate filter, and it does not protect against organic solvent vapor or acid gas. If dust or mist is also present, pair it with a 3M 5N11 or 5P71 prefilter and 501 retainer, or choose the all-in-one 3M 60924 (NH3/MA + P100). If your hazard is solvent vapor instead of ammonia, the 3M 6001 is the correct part; for several gases at once, the 3M 6006 or 3M 60926 covers a broader mix.

Where it fits

Identify the contaminant before choosing any cartridge — ideally through an industrial-hygiene assessment. Reach for the 6004 in industrial refrigeration using anhydrous ammonia; water and wastewater treatment handling ammonia and amine compounds; and fertilizer, chemical, and lab work where ammonia or methylamine is the confirmed hazard. For particulate-only work, use a P100 filter instead; for ammonia with dust present, the 3M 60924 is the lower-hassle option. If chlorine or other acid gases are also present, you need an acid-gas or multi-gas cartridge instead — browse the multi-gas cartridges collection.

Pros & cons

Specifications

Related guides

• How to choose a respirator cartridge
• Respirator cartridge color chart
• Organic vapor vs P100
• Respirator filter types explained
• P100 vs N95

Related resources

• 3M 60924 ammonia/methylamine + P100 cartridge
• 3M 6001 organic vapor cartridge
• 3M 6006 multi-gas cartridge
• 3M 60926 multi-gas/P100 cartridge
• Shop 3M respirator filters and cartridges
• Read the full 3M 6004 review

Frequently asked questions

What is the 3M 6004 used for?

Ammonia and methylamine vapor protection — refrigeration, water and wastewater treatment, fertilizer and chemical handling, and lab work — on 3M bayonet respirators.

Does the 3M 6004 have a particulate filter?

No. It's a gas/vapor cartridge only. For dust, add a 3M 5N11 or 5P71 prefilter with a 501 retainer, or use the 3M 60924, which includes P100.

What respirators does the 3M 6004 fit?

3M bayonet respirators: the 6000, 6500QL, and 7500 half masks and the 6000 series, 7800S, and Ultimate FX FF-400 full facepieces. It does not fit Honeywell North, Moldex, MSA, GVS, or 3M Secure Click respirators.

What's the difference between the 3M 6004 and the 60924?

Both protect against ammonia and methylamine. The 60924 adds a built-in P100 filter for dust; the 6004 is gas-only and needs a separate prefilter if particulate is present.

What is the NIOSH color code for the 3M 6004?

Green, which identifies ammonia and methylamine protection.

Does the 3M 6004 protect against chlorine or other acid gases?

No. It's not rated for acid gases such as chlorine. For acid gas, use an acid-gas cartridge; for several gases at once, the multi-gas 3M 6006 or 60926.

Can I use the 3M 6004 for organic solvent vapor?

No. Organic solvent vapor requires an organic-vapor cartridge such as the 3M 6001. The 6004 is rated only for ammonia and methylamine.

How many 3M 6004 cartridges do I need?

3M bayonet cartridges install as a pair, one on each side of the facepiece. Confirm the exact pack quantity on the current listing before ordering, as packaging can vary.

Is the 3M 6004 good for refrigeration ammonia?

Yes, for ammonia vapor at concentrations within the cartridge's rated limits on a fit-tested 3M respirator. At high or unknown concentrations, ammonia can be immediately dangerous to life and requires supplied-air equipment instead.

When should I replace the 3M 6004?

Replace it on your employer's change-out schedule, or sooner if you detect ammonia odor or irritation, breathing becomes difficult, or the cartridge is damaged.

Should I buy the 3M 6004 or the 60924?

Buy the 6004 for clean ammonia-vapor environments at the lowest cost. Buy the 60924 if dust or mist is also present and you want gas-plus-P100 protection in one cartridge.

Does ammonia have a strong warning odor, so can I rely on smell instead of a change schedule?

Ammonia does have a sharp, noticeable odor at low concentrations, which is a genuine advantage over gases with poor warning properties — but odor detection varies by person and can fade with exposure. Follow your written change-out schedule rather than relying on smell alone, and treat any odor breakthrough as a signal to leave the area and replace the cartridge immediately.

Reviewed by Steven Eaton, WC Safety. Specifications reflect 3M's published data for the 6004 ammonia/methylamine cartridge; ammonia exposure limits and respirator selection should follow OSHA 1910.134 and a workplace hazard assessment. High-concentration ammonia can be immediately dangerous to life and may require supplied-air equipment.