Best Multi-Gas/P100 Respirator Cartridge: 3M 60926 vs MSA GME-P100 vs Honeywell North 75SCP100L (2026)
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Quick Answer
All three are NIOSH-approved multi-contaminant cartridges covering organic vapor, acid gas, ammonia/methylamine, and P100 particulate protection — the broadest non-specialty combination available from each brand. As with all respirator cartridges, the decision is determined primarily by your existing facepiece platform.
- 3M 60926 Top Pick — New Programs — for 3M 6000, 6500, 7500 half-masks and 3M full-face respirators. Widest facepiece selection, deepest availability, and the go-to multi-gas choice for the 3M platform.
- MSA 815182 GME-P100 MSA Comfo Platform — for MSA Comfo Classic, Comfo II, Ultra-Twin, and Ultra Elite facepieces only. Correct multi-gas choice for the MSA Comfo platform.
- Honeywell North 75SCP100L North Platform — for North 7700/5500 half-masks and North 5400/7600 full-face respirators. The only multi-gas/P100 cartridge for the North platform in this combination class.
Bottom line: Platform determines the correct cartridge. If starting a new multi-gas protection program with no existing equipment, the 3M 60926 on a 3M facepiece provides the broadest facepiece selection and most reliable supply chain. For existing MSA Comfo programs, the GME-P100 is the correct upgrade from a GMA-P100 when ammonia coverage is required. For North platform programs, the 75SCP100L is the correct choice.
At-a-Glance Specification Comparison
| Specification | 3M 60926 | MSA 815182 GME-P100 | Honeywell North 75SCP100L |
|---|---|---|---|
| NIOSH Approval Class | OV/AG/AM/FM/P100 | OV/AG/AM/FM/P100 | OV/AG/AM/FM/P100 |
| Organic Vapor (OV) | Yes | Yes | Yes |
| Acid Gas (AG) | Yes | Yes | Yes |
| Ammonia / Methylamine | Yes | Yes | Yes |
| Formaldehyde (FM) | Yes | Yes | Yes |
| P100 Particulate | Yes — ≥99.97% | Yes — ≥99.97% | Yes — ≥99.97% |
| Connection Type | 3M bayonet twist-lock | MSA Comfo bayonet | North bayonet twist-lock |
| Compatible Facepieces | 3M 6000, 6500, 7500 half-mask; 3M full-face | MSA Comfo Classic/II, Ultra-Twin, Ultra Elite | North 7700, 5500 half-mask; North 5400, 7600 full-face |
| Cross-Brand Compatibility | 3M only | MSA Comfo only | North only |
| ANSI Color Code | Olive/Magenta (multi-gas) | Olive/Magenta | Olive/Magenta/Other |
| Sold As | Pair (2 cartridges) | Pair (2 cartridges) | Pair (2 cartridges) |
| WC Safety SKU | 3m-60926-p100-multi-gas-and-vapor-respirator-cartridge | msa-gme-p100-multigas-particulate-cartridge | honeywell-north-75scp100l-multi-contaminant-p100-respirator-cartridge |
Chemical Coverage: What These Cartridges Protect Against
The 60926, GME-P100, and 75SCP100L represent the broadest non-specialty combination cartridge available from each manufacturer. "Broadest non-specialty" means they cover the four main gas/vapor hazard classes — OV, acid gas, ammonia/methylamine, and formaldehyde — plus P100 particulates. They do not cover mercury vapor, radioactive particles (beyond general P100), or specialty gases like phosphine or arsine, which require dedicated NIOSH approval categories.
| Contaminant | 3M 60926 | MSA GME-P100 | North 75SCP100L |
|---|---|---|---|
| Organic Vapors (solvents, fuels, paints) | Yes | Yes | Yes |
| Acid Gases (HCl, SO₂, H₂S, Cl₂) | Yes | Yes | Yes |
| Ammonia (NH₃) | Yes | Yes | Yes |
| Methylamine (CH₃NH₂) | Yes | Yes | Yes |
| Formaldehyde (HCHO) | Yes | Yes | Yes |
| P100 Particulates (≥99.97%) | Yes | Yes | Yes |
| Mercury Vapor | No | No | No |
| Chlorine Dioxide | No (standard) | No (standard) | No (standard) |
| Phosphine / Arsine | No | No | No |
| IDLH / CBRN | No — APF 10 (half-mask) | No — APF 10 (half-mask) | No — APF 10 (half-mask) |
When to upgrade to a multi-gas cartridge over a standard OV/P100: If your hazard profile includes ammonia (refrigerants, livestock facilities, cleaning compounds, fertilizer applications), methylamine, or formaldehyde (medical, textile, laboratory, mortuary, woodworking with formaldehyde-based resins), you must use a multi-gas cartridge. The standard OV/P100 cartridges (3M 60921, MSA GMA-P100, North 7581P100L) do not provide ammonia or formaldehyde protection.
Product Profiles
3M 60926 Multi-Gas/P100 Cartridge Top Pick — New Programs
The 3M 60926 is the broadest non-specialty combination cartridge in the 3M 6000-series lineup. It builds on the same 3M bayonet platform as the 60921 (OV/P100) and 60928 (OV/P100 with mercury), expanding coverage to include ammonia, methylamine, and formaldehyde protection. This makes it the appropriate choice for environments with complex mixed gas/vapor hazard profiles where the standard OV/P100 cartridge is insufficient.
Common applications for the 3M 60926 include wastewater treatment operations (hydrogen sulfide + ammonia), livestock and poultry facilities (ammonia), refrigeration service (ammonia refrigerants), agricultural chemical operations, and laboratory environments where diverse chemical exposure exists. The formaldehyde coverage is particularly relevant in pathology, histology, medical device manufacturing, and wood products with urea-formaldehyde adhesives.
The 60926 fits the same facepieces as every other 3M 6000-series cartridge — 3M 6000, 6500, and 7500 half-masks, plus 3M full-face respirators. For existing 3M platform users already using the 60921, upgrading to the 60926 requires no facepiece change and no re-fit-testing — simply swap the cartridge.
For a direct head-to-head comparison of the 3M 60926 against the Honeywell North 75SCP100L specifically, see our 3M 60926 vs Honeywell North 75SCP100L guide.
Key Strengths
- Broadest multi-contaminant coverage in the 3M 6000-series cartridge family
- Drop-in replacement for 60921 on any compatible 3M facepiece
- Same wide facepiece compatibility as all other 3M 6000-series cartridges
- Widely available through 3M's deep distribution network
- Appropriate for complex mixed-hazard environments without needing specialty cartridges
Limitations
- 3M bayonet platform only — not compatible with MSA or North facepieces
- Does not cover mercury vapor (requires 3M 60928 for mercury)
- OV and ammonia sorbent capacities require documented change-out schedules per OSHA 1910.134
- More expensive than the OV/P100 60921 — only upgrade if your hazard profile includes ammonia or formaldehyde
MSA 815182 GME-P100 Cartridge (Comfo Platform) MSA Comfo Platform
The MSA 815182 GME-P100 is MSA's multi-contaminant P100 cartridge for the Comfo facepiece platform. The "GME" designation distinguishes it from the GMA-P100 (OV/P100 only) by adding ammonia/methylamine and formaldehyde coverage to the existing organic vapor, acid gas, and P100 protection. It uses the same MSA Comfo bayonet connection as the GMA-P100.
For MSA Comfo users whose work environments include ammonia exposure — wastewater treatment, refrigeration, agricultural operations, or livestock handling — the GME-P100 is the correct upgrade from the GMA-P100. The facepiece remains the same; only the cartridge changes. This is a critical decision point: the GMA-P100 provides no ammonia protection, while the GME-P100 does.
MSA's Comfo platform has a strong installed base in mining, chemical processing, and heavy industrial environments where ammonia is a documented hazard. Facilities with existing MSA Comfo fit-test records and PPE programs can transition from GMA-P100 to GME-P100 for expanded coverage without changes to facepiece inventory or re-training for facepiece donning procedures.
The GME-P100 fits MSA Comfo Classic, Comfo II, Ultra-Twin, and Ultra Elite facepieces. It does not fit MSA Advantage series facepieces (those require the MSA Advantage GME-P100 equivalent). It does not fit any 3M or North facepiece.
Key Strengths
- Correct multi-gas upgrade for the established MSA Comfo platform
- Drop-in upgrade from GMA-P100 on existing Comfo facepieces — no re-fit-test needed
- NIOSH-approved OV + acid gas + ammonia + formaldehyde + P100 protection
- Well-suited to heavy industrial, chemical, and wastewater environments standardized on MSA
- Available through MSA distributor network and major online channels
Limitations
- MSA Comfo platform only — not compatible with MSA Advantage or any non-MSA facepiece
- Smaller facepiece ecosystem than the 3M platform
- Does not cover mercury vapor
Honeywell North 75SCP100L Multi-Contaminant P100 Cartridge North Platform
The Honeywell North 75SCP100L is the multi-contaminant P100 cartridge for the North respirator platform. It provides the same broad chemical coverage class — OV, acid gas, ammonia/methylamine, formaldehyde, and P100 — as the 3M 60926 and MSA GME-P100, but for North bayonet facepieces exclusively. It is the correct multi-gas cartridge for North 7700/5500 half-masks and North 5400/7600 full-face respirators.
The "SCP" designation in the North product lineup indicates the expanded multi-contaminant combination. For North platform users currently using the 7581P100L (OV/P100 only), the 75SCP100L is the correct upgrade when ammonia or formaldehyde hazards are present in the work environment. The bayonet connection and facepiece compatibility are the same; only the cartridge changes.
Honeywell North full-face respirators (5400/7600) are particularly prevalent in petrochemical, pharmaceutical, and utilities environments — industries where complex multi-gas hazard profiles are common. The 75SCP100L is available through WC Safety and major industrial distributors. For a direct comparison of the 75SCP100L against the 3M 60926, see our 3M 60926 vs Honeywell North 75SCP100L guide.
Key Strengths
- Only NIOSH-approved multi-contaminant P100 cartridge for North bayonet platform
- Drop-in upgrade from 7581P100L on any compatible North facepiece
- Equivalent chemical coverage to 3M 60926 and MSA GME-P100
- North full-face options (5400/7600) offer wide-view lens for precision work environments
Limitations
- North platform only — no cross-brand compatibility
- Smaller facepiece ecosystem than 3M
- Does not cover mercury vapor
Key Differences Between the Three Cartridges
1. Platform Lock-In: The Primary Decision Variable
As with all respirator cartridges, the bayonet connection is proprietary to each brand. The 3M 60926 cannot be used on MSA or North facepieces. The MSA GME-P100 cannot be used on 3M or North facepieces. The North 75SCP100L cannot be used on 3M or MSA facepieces. Workers must use the multi-gas cartridge for their specific facepiece platform — there are no exceptions to this rule under NIOSH certification or OSHA compliance.
2. Chemical Coverage: All Three Are Equivalent in Approved Class
All three products hold NIOSH approval for the same combination class: organic vapor, acid gas, ammonia/methylamine, formaldehyde, and P100. The listed chemical coverage on the NIOSH approval is equivalent. The specific sorbent blend used internally may differ between manufacturers, which can produce variations in service life for specific contaminants at specific concentrations. For most industrial applications covered by this combination class, the protection is functionally equivalent.
Always consult your industrial hygienist and use the specific manufacturer's service life calculation tools for your documented air concentrations, temperature, and humidity when developing your cartridge change-out schedule.
3. When to Choose Multi-Gas Over OV/P100
The multi-gas cartridges (60926, GME-P100, 75SCP100L) are upgrades from the standard OV/P100 cartridges (60921, GMA-P100, 7581P100L). The upgrade is only warranted when your hazard profile includes ammonia, methylamine, or formaldehyde. Using a multi-gas cartridge when only OV/P100 protection is required is not harmful — but it costs more and may have shorter service life for OV-only use depending on the specific contaminant concentrations.
Do not downgrade from a multi-gas to an OV/P100 cartridge if ammonia or formaldehyde is present in your work environment — the OV/P100 cartridges provide no protection against these compounds.
4. Availability and Format Differences
All three products are sold in pairs (2 cartridges per package). The 3M 60926 typically has the widest distributor network coverage. The MSA GME-P100 is distributed through MSA's industrial channel. The North 75SCP100L is available through Honeywell North's distribution network and major online suppliers including WC Safety. Lead times and pricing vary by region and supplier; verify current availability when planning procurement for large programs.
Which to Buy: Scenario Decision Matrix
| Situation | Best Choice | Reason |
|---|---|---|
| You own a 3M 6000, 6500, or 7500 half-mask — ammonia in your environment | 3M 60926 | Only multi-gas/P100 for 3M bayonet platform; drop-in replacement for 60921 |
| You own a 3M facepiece — OV/P100 only, no ammonia or formaldehyde | 3M 60921 | No need to upgrade to 60926; save cost and potentially extend sorbent service life |
| You own an MSA Comfo facepiece — ammonia or formaldehyde hazard present | MSA GME-P100 (815182) | Correct multi-gas upgrade for Comfo platform; GMA-P100 doesn't cover ammonia |
| You own a North 7700, 5500, 5400, or 7600 respirator — multi-gas needed | North 75SCP100L | Only multi-gas/P100 for North bayonet facepieces |
| Starting a new multi-gas P100 program — no existing facepieces | 3M 60926 (with 3M facepiece) | Widest facepiece selection, deepest availability, largest support network |
| Wastewater treatment — H₂S + ammonia exposure | Platform-matched multi-gas cartridge | All three cover H₂S (acid gas) + ammonia; choose based on facepiece |
| Ammonia refrigeration system service | Platform-matched multi-gas cartridge | Standard OV/P100 cartridges do not cover ammonia; must use multi-gas |
| Histology / pathology lab — formaldehyde exposure | Platform-matched multi-gas cartridge | Formaldehyde coverage is included in all three multi-gas cartridges; absent from OV/P100 |
| Livestock / poultry facility — ammonia environment | Platform-matched multi-gas cartridge | Ammonia is not covered by OV/P100 cartridges; multi-gas required |
| Need mercury vapor coverage | None of these three | 3M 60928 (OV/Hg/P100) is required for mercury vapor protection |
Platform Compatibility Details
No cartridge from 3M, MSA, or Honeywell North is cross-compatible with another brand's facepiece. Attempting to use a non-matched cartridge on a facepiece is a NIOSH certification violation and an OSHA compliance failure. Always confirm your facepiece model before ordering.
3M 60926 Compatible Facepieces
- 3M 6100 / 6200 / 6300 half-mask (S/M/L)
- 3M 6501QL / 6502QL / 6503QL half-mask with Quick Latch
- 3M 7501 / 7502 / 7503 half-mask series
- 3M 6800 / 6900 full-face respirators
- 3M 7800S full-face respirator
Same bayonet platform as all other 3M 6000-series cartridges. No re-fit-test is required when switching from 60921 to 60926 on the same facepiece.
MSA 815182 GME-P100 Compatible Facepieces (Comfo Platform Only)
- MSA Comfo Classic half-mask
- MSA Comfo II half-mask
- MSA Ultra-Twin full-face respirator
- MSA Ultra Elite full-face respirator
Not compatible with MSA Advantage series facepieces. Not compatible with any 3M or North facepiece.
Honeywell North 75SCP100L Compatible Facepieces
- North 7700 series half-masks
- North 5500 series half-masks
- North 5400 series full-face respirators
- North 7600 series full-face respirators
Not compatible with any 3M or MSA facepiece. No re-fit-test required when upgrading from 7581P100L on the same North facepiece.
Upgrade Path: OV/P100 to Multi-Gas
For programs currently using standard OV/P100 cartridges, upgrading to multi-gas is a cartridge-only change — no facepiece replacement or re-fit-testing is required if you stay on the same platform. The upgrade paths are straightforward:
| Current Cartridge | Facepiece Platform | Multi-Gas Upgrade | Re-Fit-Test Required? |
|---|---|---|---|
| 3M 60921 (OV/P100) | 3M 6000/6500/7500 half-mask | 3M 60926 | No |
| MSA GMA-P100 (OV/P100) | MSA Comfo Classic/II/Ultra-Twin/Elite | MSA GME-P100 (815182) | No |
| North 7581P100L (OV/P100) | North 7700/5500/5400/7600 | North 75SCP100L | No |
The change-out schedule must be updated when switching to a multi-gas cartridge, as the additional sorbent layers (particularly the ammonia sorbent) may have different service life parameters from the OV sorbent alone. Consult each manufacturer's service life calculator for the specific contaminants and concentrations in your environment.
Related Guides and Resources
More WC Safety buyer's guides
Frequently Asked Questions
What is the difference between the 3M 60921 and the 3M 60926?
The 3M 60921 is an OV/P100 cartridge — organic vapor, acid gas, and P100 particulate protection. The 3M 60926 adds ammonia/methylamine and formaldehyde coverage to the same base OV + P100 protection. Both fit the same 3M bayonet facepieces. Upgrade from 60921 to 60926 only if your documented hazard profile includes ammonia or formaldehyde.
What is the difference between the MSA GMA-P100 and the MSA GME-P100?
The MSA GMA-P100 (815178) provides OV + acid gas + P100 protection. The MSA GME-P100 (815182) expands this to also cover ammonia, methylamine, and formaldehyde. Both fit MSA Comfo facepieces and are direct substitutes — the GME-P100 is the appropriate upgrade when ammonia or formaldehyde exposure is documented.
Does the 3M 60926 protect against ammonia?
Yes. The 3M 60926 is NIOSH-approved for ammonia and methylamine protection in addition to OV, acid gas, formaldehyde, and P100. This distinguishes it from the 3M 60921, which does not provide ammonia coverage.
Can I use the Honeywell North 75SCP100L on a 3M facepiece?
No. The North 75SCP100L uses the North bayonet connection and will not fit any 3M facepiece. Using a non-compatible cartridge violates the NIOSH certification and does not provide a valid seal or protection factor.
Do I need to re-fit-test my workers if I switch from 60921 to 60926?
No. Switching between cartridge models on the same 3M facepiece does not require a new fit test. The facepiece determines fit — the cartridge does not affect the seal. Your written respiratory protection program should be updated to reflect the new cartridge selection and change-out schedule.
What industries commonly use multi-gas/P100 cartridges?
Multi-gas P100 cartridges are commonly used in wastewater treatment (ammonia + H₂S), ammonia refrigeration systems, livestock and poultry operations, agricultural chemical application, histology and pathology labs (formaldehyde), wood products manufacturing with formaldehyde-based adhesives, pharmaceutical manufacturing, and general chemical processing where mixed vapor hazards exist.
Does the 3M 60926 protect against mercury vapor?
No. The 3M 60926 does not cover mercury vapor. Mercury vapor requires a specialized NIOSH approval that includes an iodine-treated activated carbon sorbent. The 3M 60928 is 3M's OV/Hg/P100 cartridge for mercury vapor applications. Do not use the 60926 in environments with mercury vapor exposure.
Is a half-mask with a multi-gas P100 cartridge sufficient for ammonia environments?
It depends on the ammonia concentration relative to the IDLH and the Assigned Protection Factor. A half-mask has an APF of 10, meaning it reduces airborne concentration by 90% — appropriate when exposure is below 10x the OEL. Ammonia's IDLH is 300 ppm; OSHA PEL is 50 ppm. If measured concentrations exceed 500 ppm (10 × PEL), a higher APF device (full-face, PAPR, or supplied air) is required. Conduct air monitoring before selecting a respirator program.
What is the service life of these multi-gas cartridges?
Service life varies by contaminant type, concentration, temperature, humidity, and breathing rate. OSHA requires employers to establish a documented change-out schedule per 29 CFR 1910.134 Appendix B1. Each manufacturer provides a service life estimator tool: 3M's ESLI/3M Service Life Software, MSA's cartridge selection guidance, and Honeywell's service life calculator. Use these tools with your actual measured air contaminant data — do not rely on a generic time interval without hazard-specific calculation.
What color are multi-gas P100 cartridges?
Per ANSI/ISEA 110, multi-contaminant cartridges covering OV, acid gas, ammonia, and formaldehyde use multiple color bands. The specific color combination varies by manufacturer but typically incorporates olive (for multi-gas/vapor combination) and magenta (P100). Verify color markings using our respirator cartridge color codes reference.
Are all three multi-gas cartridges sold in pairs?
Yes. The 3M 60926, MSA GME-P100, and Honeywell North 75SCP100L are all sold in pairs (2 cartridges per package), consistent with standard half-mask and full-face respirator use (one cartridge per side of the facepiece).
What is the MSA GME-P100 part number?
The MSA multi-gas P100 cartridge for the Comfo platform is the MSA 815182 GME-P100. Confirm the part number when ordering to avoid confusion with the GMA-P100 (815178), which does not cover ammonia.
Can I use the MSA GME-P100 on an MSA Advantage facepiece?
No. The MSA 815182 GME-P100 is designed for the MSA Comfo platform. MSA Advantage series facepieces (200LS, 420, 1000, 3000, 4000) use a different bayonet connection and require the MSA Advantage-compatible multi-gas cartridge. Verify your specific facepiece model before ordering.
How does the 3M 60926 compare to the North 75SCP100L in chemical coverage?
Both products are NIOSH-approved for the same combination class: OV, acid gas, ammonia/methylamine, formaldehyde, and P100. The approved protection categories are equivalent. For a detailed head-to-head on sorbent differences, availability, and pricing, see our 3M 60926 vs Honeywell North 75SCP100L guide.
Which multi-gas cartridge should I specify for a new program?
If starting from scratch with no existing facepieces or fit-test records, the 3M 60926 on a 3M facepiece platform is the default recommendation for new programs. The 3M platform offers the widest facepiece size selection (critical for diverse workforces), the deepest availability through industrial and online suppliers, and well-documented technical resources for change-out schedule development.
Is the multi-gas cartridge safe to use when only OV/P100 protection is needed?
Yes, using a multi-gas cartridge in an environment that only requires OV/P100 protection is safe. It is not harmful to over-specify cartridge coverage. The practical considerations are cost (multi-gas cartridges cost more) and potentially shorter service life for OV-only environments if the additional sorbent layers affect capacity for a specific contaminant. For environments with known ammonia or formaldehyde exposure, always use the multi-gas cartridge.
Written by: Steven Eaton — WC Safety Editorial
Steven Eaton is an industrial safety equipment specialist with hands-on experience across respirator selection, cartridge compatibility, and OSHA 1910.134 compliance. WC Safety serves safety managers, procurement teams, and industrial workers sourcing respiratory protection for real-world hazard environments.
Last Updated: June 2026 | Review Schedule: Every 6 months or when NIOSH approval changes occur
All product specifications in this guide are drawn from published NIOSH approval records and manufacturer technical documentation. No specifications have been fabricated or estimated.
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