MSA GMA vs 3M 6001: Organic Vapor Cartridge Comparison (2026)
Quick Answer
Both are NIOSH-approved activated carbon organic vapor cartridges — the protection class is identical. Platform compatibility is the only real decision: the MSA 464031 GMA fits MSA Comfo-platform facepieces only; the 3M 6001 fits 3M bayonet facepieces only. There is no adapter, no cross-compatibility, and no workaround. Buy the cartridge that matches the respirator already in your inventory.
MSA GMA vs 3M 6001 at a Glance
| Spec | MSA 464031 GMA | 3M 6001 |
|---|---|---|
| Type | Organic Vapor Cartridge | Organic Vapor Cartridge |
| NIOSH Class | OV (42 CFR Part 84) | OV (42 CFR Part 84) |
| Particulate Rating | None | None |
| Chemical Protection | Organic vapors only | Organic vapors only |
| Platform / Mount | MSA Comfo (GM-series threaded bayonet) | 3M bayonet twist-lock |
| Pack Size | Box of 10 cartridges | Pairs (2 cartridges per pack) |
| List Price (approx.) | ~$11.55/cartridge | ~$9–11/cartridge |
| Best For | MSA Comfo, Ultra-Twin, Ultra Elite users | 3M 6000, 6500, 7500, 7800S users |
Product Profiles
MSA 464031 GMA Organic Vapor Cartridge
The MSA 464031 GMA is a single-function organic vapor cartridge designed exclusively for the MSA Comfo respirator platform. It uses activated carbon as the primary sorbent to capture a wide range of organic vapor compounds below their IDLH concentrations. The cartridge is NIOSH-approved under 42 CFR Part 84 and is sold in boxes of 10, which aligns well with high-volume industrial procurement cycles where maintaining a documented change schedule requires bulk inventory.
The Comfo platform's threaded GM-series bayonet mount provides a secure mechanical connection and has been the MSA standard for decades. This means facilities that have invested in MSA Comfo Classic, Comfo II, Ultra-Twin, or Ultra Elite facepieces can rely on consistent cartridge availability from MSA's distribution network. The GMA is the base cartridge in MSA's Comfo cartridge lineup — for users who need particulate protection in addition to OV, MSA offers the GMA-P100 (815178) as a direct upgrade on the same platform.
There is no acid gas, ammonia, or CO protection in the GMA. Sorbent bed capacity is sized for the Comfo facepiece geometry. Like all activated carbon OV cartridges, the GMA lacks a passive end-of-service-life indicator, so a validated change schedule is mandatory under OSHA 29 CFR 1910.134(d)(3)(iii). MSA provides guidance for establishing change schedules through their product documentation.
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3M 6001 Organic Vapor Cartridge
The 3M 6001 is 3M's entry-level organic vapor cartridge and the most widely stocked OV cartridge in North America. It uses 3M's activated carbon sorbent formulation to adsorb organic vapors and fits any respirator equipped with the standard 3M bayonet twist-lock — covering the 6000 series half-masks (6100, 6200, 6300), 6500 series, 7500 series, and the 6000, 7800S, and FF-400 full-face respirators. Cartridges are sold in pairs, which suits worksites where individual workers manage their own cartridge inventories rather than pulling from centralized bulk stock.
The 3M 6001's reach across the 3M facepiece ecosystem makes it the default OV recommendation for facilities already standardized on 3M hardware. Because the same cartridge works across 3M half-mask and full-face platforms, safety managers can stock a single SKU and deploy it across mixed facepiece inventories. The 3M 6001 is frequently paired with 3M 2091 P100 filters when particulate protection is also needed — though for a true combination cartridge on the 3M platform, the 3M 60921 is the cleaner solution.
Like the MSA GMA, the 3M 6001 provides no particulate filtration and no protection against acid gases, ammonia, or CO. 3M's Safety Communication Solutions (SCS) change schedule software can be used to calculate service life estimates based on contaminant, concentration, humidity, breathing rate, and use time — a useful tool for facilities needing documented change intervals without commissioning a full industrial hygiene study.
Protection Scope
| Hazard Class | MSA 464031 GMA | 3M 6001 |
|---|---|---|
| Organic Vapors (solvents, hydrocarbons) | ✓ Yes | ✓ Yes |
| Particulate (dust, mist, fume) | ✗ No | ✗ No |
| Acid Gases (HCl, SO2, Cl2) | ✗ No | ✗ No |
| Ammonia / Methylamine | ✗ No | ✗ No |
| Carbon Monoxide | ✗ No | ✗ No |
| Formaldehyde | ✗ No (standalone) | ✗ No (standalone) |
Key Differences
- Platform incompatibility is absolute. MSA GMA uses the GM-series threaded bayonet. 3M 6001 uses the 3M bayonet twist-lock. No adapter exists. Ordering the wrong cartridge for your facepiece means the cartridge physically will not attach.
- Pack configuration differs. MSA GMA ships in boxes of 10 individual cartridges — better for bulk procurement and high-frequency change schedules. 3M 6001 ships in pairs — standard for individual issue or smaller operations.
- Facepiece ecosystem reach. The 3M 6001 works across a broader installed base (6000, 6500, 7500 half-masks and 7800S, FF-400 full-face). The MSA GMA covers the Comfo family (Comfo Classic, Comfo II, Ultra-Twin, Ultra Elite) — a large but narrower installed base.
- Upgrade path differs. On the MSA Comfo platform, the upgrade from OV-only to OV/P100 is the GMA-P100 (815178). On the 3M platform, the upgrade is the 3M 60921. Both are direct cartridge swaps — no hardware change required.
- Approximate unit pricing. The MSA GMA tends to run slightly higher per cartridge than the 3M 6001 at typical distributor pricing, though this varies by volume and contract.
- Change schedule tools. 3M offers the SCS (Safety Communication Solutions) model for calculated change schedules at no charge. MSA provides change schedule guidance through their technical documentation and safety specialists.
Which Should You Buy
You Have MSA Comfo-Platform Facepieces
If your workforce is equipped with MSA Comfo Classic, Comfo II, Ultra-Twin, or Ultra Elite respirators, the MSA 464031 GMA is the correct cartridge. There is no alternative — the 3M 6001 will not physically mount to these facepieces. For high-frequency change schedules or large crews, the box-of-10 format is the right procurement unit.
You Have 3M Bayonet Facepieces
If your workforce runs 3M 6000, 6500, or 7500 half-masks, or 3M 7800S or FF-400 full-face respirators, the 3M 6001 is the correct cartridge. The pair format works well for individual-issue programs. The 3M 6001's availability through virtually every PPE distributor means it's easy to maintain stock without sole-source dependence.
You Are Purchasing a New Respirator System
If you are specifying a new respiratory protection program from scratch, the cartridge selection follows the facepiece selection — not the other way around. Consider facepiece fit, comfort ratings for your workforce, and platform availability in your supply chain before committing. Both 3M and MSA Comfo platforms are mature, well-supported, and NIOSH-approved. If your contaminant profile is purely organic vapors with no particulate concern, either OV cartridge will serve — but if there is any chance of particulate exposure being added to the program later, factor in the upgrade path (GMA-P100 for MSA, 60921 for 3M) when selecting the facepiece.
Scenarios Where OV-Only Is Not Enough
Neither the MSA GMA nor the 3M 6001 is appropriate for spray painting, welding with solvent vapors, or any task generating both organic vapors and airborne particulate. Those applications require a combination OV/P100 cartridge. Review your SDS and conduct a hazard assessment before assigning these cartridges to a task.
Compatibility
MSA 464031 GMA — Compatible Facepieces
The MSA GMA cartridge mounts to all MSA Comfo-platform facepieces using the GM-series threaded bayonet connection:
- MSA Comfo Classic half-mask
- MSA Comfo II half-mask
- MSA Ultra-Twin full-face respirator
- MSA Ultra Elite full-face respirator
It is not compatible with MSA Advantage-platform respirators (Advantage 200 LS, 420, 1000, 3000, 4000), which use a snap-on mount and require MSA Advantage-series cartridges. It is not compatible with any 3M, Honeywell North, or other brand facepiece.
3M 6001 — Compatible Facepieces
The 3M 6001 uses the standard 3M bayonet twist-lock and fits any 3M respirator using that mount:
- 3M 6100 / 6200 / 6300 half-mask (6000 series)
- 3M 6502QL / 6503QL (6500 series QuickLatch)
- 3M 7501 / 7502 / 7503 (7500 series silicone)
- 3M 6000 series full-face respirators
- 3M 7800S full-face respirator
- 3M FF-400 series full-face respirators
It is not compatible with MSA Comfo, MSA Advantage, Honeywell North, or other brand facepieces.
Related Guides
- How to Choose a Respirator Cartridge — full decision framework covering OV, acid gas, P100, and combination classes for industrial applications.
- Best 3M Respirator Cartridges — ranked buyer's guide covering the full 3M cartridge lineup by application.
- MSA GMA-P100 vs 3M 60921 — comparison of OV/P100 combination cartridges for spray painting and coating applications.
- P95 vs R95 vs P100 Filter Class Guide — explains NIOSH particulate filter ratings and when each class is required.
- Respirator Cartridge ESLI Guide — covers end-of-service-life indicators, change schedule requirements, and OSHA compliance for vapor cartridges.
- 3M vs Honeywell North Respirator Cartridges — cross-brand comparison for facilities evaluating platform standardization.
- Respirator Cartridge Color Codes — NIOSH color-code guide for identifying cartridge type by visual inspection.
- N95 vs P100: Which One Do You Actually Need — explains when a particulate-only filter is sufficient vs. when vapor protection is required.
- MSA Respirator Filters and Cartridges — full MSA cartridge collection at WC Safety.
- 3M Respirator Cartridges and Filters — full 3M cartridge collection at WC Safety.
Frequently Asked Questions
Can I use an MSA GMA cartridge on a 3M half-mask respirator?
No. MSA GMA cartridges use a threaded bayonet mount specific to the MSA Comfo platform. They are not compatible with 3M bayonet facepieces. There is no adapter available.
Can I use a 3M 6001 cartridge on an MSA Ultra Elite or Comfo facepiece?
No. The 3M 6001 uses the 3M bayonet twist-lock mount. It does not fit MSA Comfo, Comfo Classic, Ultra-Twin, or Ultra Elite facepieces.
What is the service life of an organic vapor cartridge?
OSHA and NIOSH require end-of-service-life indicator (ESLI) technology or a documented change schedule. Neither the MSA GMA nor the 3M 6001 has a passive ESLI. Change schedules must be established per OSHA 29 CFR 1910.134(d)(3)(iii) based on industrial hygiene data or a validated model such as 3M's SCS.
What NIOSH approval number covers the MSA 464031 GMA cartridge?
MSA GMA-series cartridges are approved under NIOSH 42 CFR Part 84 as organic vapor cartridges. Consult the current MSA approval label for the specific TC approval number, as it can change with product revisions.
Does the MSA GMA cartridge provide particulate protection?
No. The MSA 464031 GMA is an organic vapor only cartridge with no particulate filter element. For combined OV and particulate protection on the MSA Comfo platform, use the MSA 815178 GMA-P100.
Does the 3M 6001 provide particulate protection?
No. The 3M 6001 is an organic vapor only cartridge. For OV plus P100 particulate protection on the 3M platform, use the 3M 60921 combination cartridge.
Which MSA facepieces accept the MSA GMA cartridge?
The MSA GMA cartridge is designed for the MSA Comfo platform, which includes the Comfo Classic, Comfo II, Ultra-Twin, and Ultra Elite facepieces. It uses a threaded bayonet (GM-series) mount.
Which 3M facepieces accept the 3M 6001 cartridge?
The 3M 6001 fits any 3M respirator using the standard 3M bayonet twist-lock mount, including the 6000 series half-masks (6100, 6200, 6300), 6500 series, 7500 series, and 6000/7800S/FF-400 full-face respirators.
How do I know when my organic vapor cartridge is saturated?
The first detectable odor or taste of the contaminant vapor indicates breakthrough. However, relying on smell is unsafe for vapors with poor odor warning properties. Always use a documented change schedule. If you detect any breakthrough odor, leave the area immediately and replace cartridges before re-entry.
Are the MSA GMA and 3M 6001 approved for oil-based aerosols?
Neither cartridge provides particulate filtration — they are activated carbon vapor sorbent cartridges only. For oil mist or oil-based aerosols alongside organic vapors, a combination OV/P100 cartridge is required.
What contaminants do organic vapor cartridges protect against?
OV cartridges use activated carbon to adsorb a broad range of organic vapor compounds including solvents such as toluene, xylene, acetone, MEK, and similar compounds. They do not protect against acid gases, ammonia, or carbon monoxide without additional sorbent layers. Always verify cartridge suitability against the specific chemical SDS before use.
Can organic vapor cartridges be used for spray painting?
OV-only cartridges do not protect against paint particulate or overspray aerosols. Spray painting applications typically require an OV/P100 combination cartridge such as the MSA 815178 GMA-P100 or 3M 60921. Check your SDS and OSHA compliance requirements.
What is the shelf life of an unused MSA GMA or 3M 6001 cartridge?
Activated carbon cartridges should be stored sealed in their original packaging in a cool, dry location away from contaminants. Once the packaging seal is broken, the change schedule clock begins. Follow manufacturer storage guidance and check the printed expiration date before use.
Do I need a fit test to use either of these cartridges?
Yes. OSHA 29 CFR 1910.134 requires a quantitative or qualitative fit test for tight-fitting respirator facepieces. The cartridge does not affect fit test requirements — the facepiece must be fit tested per OSHA requirements regardless of which cartridge is installed.
Can these cartridges be used in IDLH atmospheres?
No. Air-purifying respirators including those using OV cartridges are not approved for IDLH (immediately dangerous to life or health) atmospheres. IDLH environments require supplied-air respirators (SAR) or self-contained breathing apparatus (SCBA).
Written by Steven Eaton — WC Safety Editorial
Steven Eaton is a safety equipment specialist and authorized distributor for 3M and MSA. WC Safety serves industrial safety managers and procurement buyers across North America.
Methodology: Product specifications sourced from NIOSH approval labels, 3M and MSA published datasheets, and authorized distributor product documentation. No specifications were estimated or interpolated. Pricing noted as approximate at time of publication and subject to change.
Affiliate Disclosure: WC Safety is an Amazon Associates affiliate. Links marked with Amazon buttons earn a commission on qualifying purchases at no additional cost to the buyer. Affiliate relationships do not influence product recommendations or editorial conclusions.
Editorial Independence: WC Safety is an authorized distributor of both MSA and 3M products. Product comparisons reflect documented specifications and real-world application guidance, not promotional agreements.