3M 60924 Ammonia Methylamine Respirator Cartridge — P100 Bayonet Combination

3M 60924 Ammonia Methylamine Respirator Cartridge overview

The 3M 60924 Ammonia Methylamine Respirator Cartridge is a NIOSH-approved ammonia/methylamine/P100 combination cartridge for 3M bayonet respirators. A green NIOSH band marks its ammonia/methylamine gas sorbent, and a magenta band marks its bonded P100 particulate filter, capturing at least 99.97% of oil and non-oil airborne particles — gas and dust protection in a single housing instead of stacking a gas cartridge with a separate filter. It twist-locks onto 3M reusable half masks and full facepieces. See our how to choose a respirator cartridge guide and respirator cartridge color chart to confirm your exposure before ordering.

It is a combination cartridge, not a particulate-only filter and not a gas-only cartridge — match it to your actual hazard mix. If your only hazard is dust, the 3M 2091 P100 filter is the correct, cheaper choice; if it's ammonia or methylamine with no dust, the gas-only 3M 6004 is enough and costs less. If a broader gas mix beyond ammonia is present, step up to the 3M 60926 multi-gas/P100, or the gas-only 3M 6006 if you don't need an attached filter.

Where it fits

Identify the contaminant before choosing any cartridge — ideally through an industrial-hygiene assessment. Reach for the 60924 in industrial refrigeration service where an ammonia leak releases NH₃ gas alongside dust or mist; wastewater and water-treatment work where ammonia off-gassing coincides with particulate; and agricultural or livestock operations where ammonia from manure or fertilizer mixes with airborne dust. For particulate-only work, use a P100 filter instead; for gas-only exposure, the 3M 6004 is the lower-cost match. Browse the multi-gas cartridges collection if your air holds more than ammonia and methylamine.

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 6004 ammonia/methylamine cartridge (gas only)
• 3M 60926 multi-gas/P100 cartridge
• 3M 6006 multi-gas cartridge
• 3M 2091 P100 filter
• Shop 3M respirator filters and cartridges
• Read the full 3M 60924 review

Frequently asked questions

What does the 3M 60924 protect against?

Ammonia and methylamine gas, plus particulates at P100 efficiency (at least 99.97% of oil and non-oil airborne particles). It does not protect against organic-solvent vapor, acid gases, formaldehyde, or carbon monoxide.

Does the 3M 60924 include a particulate filter?

Yes. It has a bonded P100 particulate layer, so it captures dust, fume, and mist in addition to ammonia and methylamine gas — no separate filter or retainer is needed.

What respirators does the 3M 60924 fit?

3M bayonet respirators: the 6000, 6500, and 7500 series 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 — those use different cartridge connections.

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

Both use the same ammonia/methylamine sorbent, but the 60924 adds a bonded P100 particulate filter while the 6004 is gas-only and costs less. Choose the 60924 when dust or mist is present with the gas; choose the 6004 when the air is gas-only, and add a separate prefilter later if particulate shows up.

Is the 3M 60924 good for ammonia refrigeration leaks?

Yes, when a leak releases ammonia gas together with airborne dust or mist — the green-band sorbent captures the ammonia and the P100 layer captures the particulate. For routine gas-only exposure, the gas-only 6004 also covers ammonia at a lower cost.

Does the 3M 60924 protect against carbon monoxide?

No. No air-purifying cartridge protects against carbon monoxide — CO exposure requires supplied-air equipment selected by a qualified safety professional.

Does the 3M 60924 protect against organic solvents or acid gas?

No. It's rated for ammonia, methylamine, and particulate only. For organic-vapor or acid-gas exposure you need a different cartridge; the 3M 60926 multi-gas/P100 covers a broader range of gases including ammonia.

What is the NIOSH color code for the 3M 60924?

Green over magenta — green indicates ammonia and methylamine protection, and magenta indicates P100 particulate protection.

How many 3M 60924 cartridges do I need?

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

When should I replace the 3M 60924?

Follow your employer's change-out schedule, or replace sooner if the cartridge is damaged, breathing becomes difficult, or you notice odor, taste, or irritation — an early sign of gas breakthrough.

Can the 3M 60924 be used for dust only?

It will capture dust through its P100 layer, but a dedicated P100 filter like the 3M 2091 is the standard, lower-cost choice for particulate-only work. Reach for the 60924 only when ammonia or methylamine is also present.

Should I buy the 3M 60924 or the 60926?

The 60924 covers ammonia and methylamine only; the 60926 covers a broader multi-gas mix that also includes ammonia, on the same P100 base. Buy the 60924 if ammonia/methylamine is your only gas hazard; buy the 60926 if other gases or vapors are also present.

Reviewed by Steven Eaton, WC Safety. Specifications reflect 3M's published data for the 60924 ammonia/methylamine/P100 combination cartridge; respirator selection should follow a hazard assessment and a written respiratory protection program per OSHA 1910.134.