MSA Advantage GMD Respirator Cartridge — Ammonia And Methylamine (MSA Advantage)

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Read our MSA Advantage GMD review for the detailed review.

MSA Advantage GMD Respirator Cartridge Overview

The MSA Advantage GMD is a NIOSH-approved ammonia and methylamine cartridge for the MSA Advantage system. It adsorbs ammonia and methylamine and carries a green (ammonia) band. As a Advantage cartridge it fits MSA Advantage 200 LS, 420, 1000, 3200 and 4100 respirators. Start with our guide to choosing a respirator cartridge, confirm the band on the respirator cartridge color chart, and see MSA Comfo vs Advantage if you are unsure which system you own.

The MSA Advantage GMD belongs to the MSA respirator filters and cartridges range. It is a gas cartridge only — for dust, add an Advantage N95 or R95 snap-on filter, or step up to the GMA/P100 combination cartridge.

Where the MSA Advantage GMD Fits in Cartridge Selection

Confirm the hazard before the cartridge. The MSA Advantage GMD handles ammonia and methylamine gas — not particulate. If you also face dust or mist, our organic vapor vs P100 guide and filter types explained cover when to move to a combination cartridge.

Who Should Buy the MSA Advantage GMD?

Buy it if your exposure is ammonia and methylamine with no significant dust, on an MSA Advantage facepiece. Choose another cartridge if your hazard differs: for ammonia and methylamine plus dust use the GMA/P100, and for a broader gas mix see the MSA Advantage GME multi-gas cartridge.

What Does the MSA Advantage GMD Protect Against?

What the MSA Advantage GMD Does NOT Protect Against

The MSA Advantage GMD does not capture particulate or organic vapor, acid gas or particulate. For dust, add an Advantage N95 or R95 snap-on filter, or step up to the GMA/P100 combination cartridge; for a different gas, match the MSA cartridge to the hazard.

No air-purifying cartridge makes a dangerous atmosphere safe. Never use the MSA Advantage GMD in an oxygen-deficient or IDLH (immediately dangerous to life or health) atmosphere, in unknown concentrations, or against gases with no warning properties — those conditions require a supplied-air or SCBA system, not a cartridge respirator. A cartridge or filter carries no assigned protection factor of its own — the APF comes from the facepiece it is fitted to: 10 for a half mask, 50 for a full facepiece (OSHA 1910.134 Table 1), which is the number that decides the highest exposure the respirator may legally be worn in. That facepiece must be fit tested before first use and at least annually, and a fit test is specific to one make, model, and size — passing on one mask does not carry over to another. Perform a user seal check every time the respirator is donned, and note that facial hair crossing the sealing surface disqualifies a tight-fitting respirator no matter how well it fit at the last test.

Best Applications

Refrigeration & fertilizer

Anhydrous-ammonia and fertilizer work on Advantage respirators.

Treatment & cleaning

Ammonia tasks; for dust, add a prefilter.

Pros & Cons

MSA Advantage GMD vs Other MSA Cartridges

MSA Advantage GMD vs the Alternatives

How it compares to the closest MSA options:

• Advantage GMD vs Advantage GME: the GME multi-gas also covers ammonia within a broader mix.
• Advantage GMD vs a P100 combo: for ammonia plus dust, add a prefilter or a combination cartridge.
• Advantage GMD vs Comfo GMD: same chemistry, different facepiece system.

MSA Advantage GMD Quick Answers

Does the MSA Advantage GMD filter dust?

No — it is gas-only; for particulate use the GMA/P100 or add a prefilter.

Does the MSA Advantage GMD fit my MSA respirator?

It fits the MSA Advantage family. Check your facepiece against the MSA half-mask and full-face ranges.

Is the MSA Advantage GMD reusable?

The cartridge is used until its service life is reached; the respirator is reusable across many cartridge changes.

MSA Advantage GMD Specifications

Compatible MSA Respirators

The MSA Advantage GMD uses the MSA Advantage connection, so it mounts on the Advantage 200 LS, Advantage 420 half masks and the Advantage 1000 and Advantage 3200 full-face respirators. It is not interchangeable with the MSA Comfo series, and does not fit 3M, Honeywell North or other brands.

Helpful Buying Guides

• MSA Comfo vs Advantage
• How to choose a respirator cartridge
• MSA vs 3M respirator cartridges
• MSA vs Honeywell North cartridges
• organic vapor vs P100
• respirator cartridge color chart
• respirator filter types explained

MSA Advantage GMD Frequently Asked Questions

What does the MSA Advantage GMD protect against?

The MSA Advantage GMD is a ammonia and methylamine cartridge. It adsorbs ammonia and methylamine. It is gas-only and does not filter particulate; it does not protect against organic vapor, acid gas or particulate.

Does the MSA Advantage GMD filter dust?

No. It is a gas cartridge. For dust or mist, add an Advantage N95 or R95 snap-on filter, or step up to the GMA/P100 combination cartridge.

Which respirators does the MSA Advantage GMD fit?

It fits MSA Advantage respirators (200 LS, 420 half masks; 1000, 3200, 4100 full-face). It does not fit the Comfo series.

What color band is the MSA Advantage GMD?

The MSA Advantage GMD carries a green (ammonia) band; confirm it on the cartridge color chart before use.

Is the MSA Advantage GMD NIOSH-approved?

Yes. The MSA Advantage GMD is NIOSH-approved under 42 CFR Part 84 for ammonia and methylamine. Verify any cartridge against the NIOSH Certified Equipment List.

How is the MSA Advantage GMD sold?

This listing is the 2-pack. Case pricing comes from an industrial distributor; we do not quote.

How often should I replace the MSA Advantage GMD?

Replace the cartridge on a documented change-out schedule based on objective data, or when an end-of-service-life indicator shows it is spent, and whenever it is damaged. Under 29 CFR 1910.134(d)(3)(iii)(B) the change schedule must rest on objective data or an end-of-service-life indicator — odour, taste or irritation may not be the primary basis. If you can smell or taste anything through the cartridge, breakthrough has already happened: leave the area immediately and change it..

Can I add a P100 filter to the MSA Advantage GMD?

Yes — the easiest route is the GMA/P100, which builds a P100 particulate filter into the same gas cartridge.

Is the MSA Advantage GMD the same as the Comfo version?

No. The chemistry is equivalent, but the connection differs — Comfo and Advantage cartridges are not interchangeable. Match the cartridge to your facepiece.

Is this the genuine MSA Advantage GMD cartridge?

Yes. Buy authentic, NIOSH-approved MSA Advantage GMD cartridges through legitimate channels only.

What is the difference between the MSA Advantage GMD and a multi-gas cartridge?

A single-class cartridge is tuned to its listed gases; a multi-gas cartridge covers a broader mix at the cost of a shorter service life against any one gas.

How should I store the MSA Advantage GMD?

Store it sealed in its original packaging, away from gases and dust, so the sorbent is not used up before you wear it.