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MSA GMA Respirator Cartridge — Organic Vapor (MSA Comfo)
$115.50
Final price set by Amazon · may vary
EDITORIAL REVIEW: 4.6/5WC Safety Review — MSA GMA Respirator Cartridge Best For: organic vapor exposure with little or no dust on MSA Comfo respirators. Not For: dust, mist or acid gas, ammonia or particulate. It ...
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EDITORIAL REVIEW: 4.6/5WC Safety Review — MSA GMA Respirator Cartridge
Best For: organic vapor exposure with little or no dust on MSA Comfo respirators.
Not For: dust, mist or acid gas, ammonia or particulate. It is a gas cartridge only.
Bottom Line: the gas-only organic vapor choice for the MSA Comfo system. Add dust protection with the GMA/P100 when particulate is present.
Editorial assessment by the WC Safety Editorial Team. Scoring reflects published MSA specifications, NIOSH approval, application fit and category expertise. WC Safety did not laboratory-test this product.
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Read our hands-on MSA GMA review for field-tested buyer notes.
MSA GMA Respirator Cartridge Overview
The MSA GMA is a NIOSH-approved organic vapor cartridge for the MSA Comfo system. It adsorbs solvents, paints, degreasers and many hydrocarbon vapors and carries a black (organic vapor) band. As a Comfo cartridge it fits MSA Comfo Classic, Comfo II, Ultra-Twin and Ultra-Elite 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 GMA belongs to the MSA respirator filters and cartridges range. It is a gas cartridge only — for dust, step up to the GMA/P100 combination cartridge, which builds a P100 filter in.
Where the MSA GMA Fits in Cartridge Selection
Confirm the hazard before the cartridge. The MSA GMA handles organic vapor 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 GMA?
Buy it if your exposure is organic vapor with no significant dust, on an MSA Comfo facepiece. Choose another cartridge if your hazard differs: for organic vapor plus dust use the GMA/P100, and for a broader gas mix see the MSA Comfo GME multi-gas cartridge.
What Does the MSA GMA Protect Against?
| Hazard | Fit | Buyer guidance |
|---|---|---|
| Organic Vapor (solvents, paints, degreasers and many hydrocarbon vapors) | Yes | The sorbent bed. |
| Dust, mist, fume (particulate) | No | Add a prefilter or use the GMA/P100 (P100) version. |
| Acid Gas, Ammonia Or Particulate | No | Use the matching MSA cartridge for that hazard. |
What the MSA GMA Does NOT Protect Against
The MSA GMA does not capture particulate or acid gas, ammonia or particulate. For dust, step up to the GMA/P100 combination cartridge, which builds a P100 filter in; for a different gas, match the MSA cartridge to the hazard.
No air-purifying cartridge makes a dangerous atmosphere safe. Never use the MSA GMA 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.
Best Applications
Painting & coatings
Solvent-based paints and coatings are its core use; see MSA GMA vs 3M 6001.
Solvent handling
Degreasing and parts washing with organic solvents; pair with a prefilter if dust is present.
Pros & Cons
Pros
NIOSH-approved organic vapor protection · genuine MSA Comfo fit · black (organic vapor) band for quick ID · lighter and cheaper than a combination cartridge
NIOSH-approved organic vapor protection · genuine MSA Comfo fit · black (organic vapor) band for quick ID · lighter and cheaper than a combination cartridge
Cons
gas only — no particulate protection · Comfo connection only (not cross-compatible) · one gas class
gas only — no particulate protection · Comfo connection only (not cross-compatible) · one gas class
MSA GMA vs Other MSA Cartridges
| Cartridge | Protects against |
|---|---|
| MSA GMB | Acid gas |
| MSA GMC | OV + acid gas |
| MSA GME | Multi-gas |
| MSA GMA/P100 | OV + P100 |
MSA GMA vs the Alternatives
How it compares to the closest MSA options:
- GMA vs GMA/P100: same organic-vapor protection; the GMA/P100 adds a P100 filter for dust.
- GMA vs GMC: the GMC adds acid-gas protection to organic vapor. MSA vs 3M →
- GMA (Comfo) vs Advantage GMA: same chemistry, different facepiece system — match it to your respirator.
MSA GMA Quick Answers
Does the MSA GMA filter dust?
No — it is gas-only; for particulate use the GMA/P100 or add a prefilter.
Does the MSA GMA fit my MSA respirator?
It fits the MSA Comfo family. Check your facepiece against the MSA half-mask and full-face ranges.
Is the MSA GMA reusable?
The cartridge is used until its service life is reached; the respirator is reusable across many cartridge changes.
MSA GMA Specifications
| Gas class | Organic Vapor |
| Particulate | None (gas cartridge) |
| NIOSH band | Black (organic vapor) band |
| Connection | MSA Comfo |
| Sold as | Each |
Compatible MSA Respirators
The MSA GMA uses the MSA Comfo threaded-bayonet connection, so it mounts on the Comfo Classic half-mask and Ultra-Elite full-face respirators (and the Comfo II and Ultra-Twin). It is not interchangeable with the MSA Advantage series, and does not fit 3M, Honeywell North or other brands.
| Respirator | Type | Compatible? |
|---|---|---|
| MSA Comfo Classic | Half mask | Yes — Comfo bayonet |
| MSA Comfo II | Half mask | Yes — Comfo bayonet |
| MSA Ultra-Elite | Full face | Yes — Comfo bayonet |
| MSA Ultra-Twin | Full face | Yes — Comfo bayonet |
| MSA Advantage series | Half / full | No — different connection |
| 3M / Honeywell North | Half / full | No (not compatible) |
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 GMA Frequently Asked Questions
What does the MSA GMA protect against?
The MSA GMA is a organic vapor cartridge. It adsorbs solvents, paints, degreasers and many hydrocarbon vapors. It is gas-only and does not filter particulate; it does not protect against acid gas, ammonia or particulate.
Does the MSA GMA filter dust?
No. It is a gas cartridge. For dust or mist, step up to the GMA/P100 combination cartridge, which builds a P100 filter in.
Which respirators does the MSA GMA fit?
It uses the MSA Comfo threaded-bayonet connection and fits the Comfo Classic, Comfo II, Ultra-Twin and Ultra-Elite. It does not fit the Advantage series.
What color band is the MSA GMA?
The MSA GMA carries a black (organic vapor) band; confirm it on the cartridge color chart before use.
Is the MSA GMA NIOSH-approved?
Yes. The MSA GMA is NIOSH-approved under 42 CFR Part 84 for organic vapor. Verify any cartridge against the NIOSH Certified Equipment List.
How is the MSA GMA sold?
This listing is the Each. Use Request a Quote for case pricing on volume orders.
How often should I replace the MSA GMA?
Replace the cartridge on a documented change-out schedule, when you detect gas or odor breakthrough, or when it is damaged.
Can I add a P100 filter to the MSA GMA?
Yes — the easiest route is the GMA/P100, which builds a P100 particulate filter into the same gas cartridge.
Is the MSA GMA the same as the Advantage 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 GMA cartridge?
Yes. WC Safety sells authentic, NIOSH-approved MSA GMA cartridges through legitimate supply channels.
What is the difference between the MSA GMA 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 GMA?
Store it sealed in its original packaging, away from gases and dust, so the sorbent is not used up before you wear it.
Written by Steven Eaton, WC Safety Editorial — industrial respiratory protection desk. Reviewed by the WC Safety Editorial Team. Specifications sourced from MSA Safety published data and verified against the NIOSH Certified Equipment List. Compare the range in MSA respirator filters & cartridges or read MSA Comfo vs Advantage.
WC Safety is an independent PPE retailer and Amazon Associate; no paid placement. Always verify cartridge compatibility and follow your written respiratory protection program. General information, not medical or regulatory advice.
Brand / Vendor
MSA Safety
Model / SKU
464031
Product Type
Respirator Cartridge
Price
$115.50 (Amazon)
Rating
4.29 / 5 — 7 reviews
Availability
Check current availability on Amazon
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Verified Buyer Reviews
Customer Reviews
★★★★★4.7 / 5· 43 ratings on Amazon
★★★★★
Does the job perfectly
I live in East Australia, and at the time of the bushfires, I had recently been released from hospital following a case of pneumonia so severe that after choking my left lung near-completely, it traveled to certain other organs, and gave me a minor heart attack. I'm in my early 30s and fit and otherwise healthy, so that blindsided me, but my doctor warned me upon my release that my heart would be weaker in the future permanently, and that it will take some time for the scarring in my lung to heal up. In the meantime, she warned, I needed to avoid inhaling anything noxious or toxic, even in small amounts (e.g while working with paint), or I could be in a lot of trouble very quickly.Then the bushfires hit, and a few weeks in my City became so flooded with smoke that by early January, it would seep into our house even through closed doors and windows, and make our hallway visibly cloudy, and our eyes sting enough in certain rooms that we had to abandon them, and it effected visibility so greatly that once the sun went down, we would look out the window and discover that we couldn't see anything beyond our letterbox.PU masks were sold out everywhere, including online, and obviously the situation was pretty dire, so I ordered a Comfo industrial respirator, and a pack of these to go with it. I figured, it wasn't exactly pretty, but staying safe was more important, so function over form it was.The combination did exactly what it was meant to, and kept me - and my freshly-vulnerable lower respiratory tract - healthy and safe. I won't pretend that I didn't get a few funny looks while out in public, especially on the days where the smoke pollution was a little less dire, but I had my priorities straight and I stuck to my guns. As a result, I didn't wind up back in hospital.If these were good enough to keep me safe while out and about on the days when my City apparently had the worst air quality of anywhere on Earth, they'll be good enough to protect you from fumes and micro-particles while you're working.10/10, highly recommend.
Verified Purchaser · March 11, · ✓ Amazon Verified Purchase
★★★★★
Quality filters
I pretty much expect high quality from MSA products and will pay the slightly higher price for a known safety and quality record. I am currently using these to protect myself from "certain microscopic hazards" and have high confidence in them. They are far superior to N95 and the re-usability and easy maintenance of the filter and mask make it a first choice for protection. The large surface area means that airflow remains almost entirely unobstructed through these filters making normal breathing quite easy and even during moderate exertion there is only a minor decrease in ease of breathing. Far more comfortable than *ANY* cloth mask I have ever worn.
Verified Purchaser · August 1, · ✓ Amazon Verified Purchase
★★★★★
Also prompt on refunds very businesslike
Quality product in good service Used for paint respirator
Verified Purchaser · April 29, · ✓ Amazon Verified Purchase
★★☆☆☆
Filter didn't fit, again.
Didn't fit, again! This is the second box of replacement filters I ordered. There are no fitment details on these products.
Verified Purchaser · May 22, 20 · ✓ Amazon Verified Purchase
★★★☆☆
Good cartridges for safe breathing.
The cartridge works fine. I only give 3/5 stars because I do not have complete confidence in the shelf life.
Verified Purchaser · May 4, 201 · ✓ Amazon Verified Purchase
★★★★★
Industrial standard respiratory protection cartridge for many organic vapors and nuisance odors
These are pretty much the industrial standard for organic vapor respiratory protection cartridges that are designed to fit MSA Comfo-II half-mask and MSA full-face respirators. You need to be sure that you use them for protection against organic vapors that have good warning properties (you can smell them before they are at toxic concentrations) and that you perform a fit test prior to use. If you also need simultaneous protection against dusts, MSA does offer particulate filters that can be attached with a filter cover to these cartridges. They work well for protection against nuisance organic odors. They are not designed to protect against immediately dangerous to life or health conditions. Know what you're doing before you rely on them in a hazardous real-world situation.
Verified Purchaser · October 18 · ✓ Amazon Verified Purchase
★★★★★
refurb the old comfo II's...
Perfect fit and type, fast delivery.
Verified Purchaser · May 20, 20 · ✓ Amazon Verified Purchase
Showing 7 of 43 Amazon reviews.
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