Moldex 7667 vs 3M 60926 Multi-Gas P100 Combo — 2026 Comparison
Moldex 7667 vs 3M 60926 Multi-Gas P100 Combo Comparison (2026)
Multi-gas P100 combination cartridges are the go-to choice in environments where organic vapors, acid gases, and particulates coexist — chemical processing, painting, pesticide application, and semiconductor manufacturing among them. Both the Moldex 7667 and the 3M 60926 occupy this space, and on paper they look similar: P100 filtration plus multi-gas coverage in a single assembly.
The headline difference is ESLI — an End-of-Service-Life Indicator. The Moldex 7667 carries a built-in colorimetric ESLI on its gas-phase section, giving wearers a visible, objective signal when the activated carbon is approaching saturation. The 3M 60926 has no such indicator; users and employers must rely on a written change schedule compliant with OSHA 29 CFR 1910.134(d)(3)(iii). That single engineering difference has real consequences for compliance burden, worker confidence, and total cost of ownership.
This guide examines both cartridges across every relevant dimension — gas coverage, ESLI mechanics, P100 filtration equivalence, price per respirator setup, platform compatibility, and upgrade paths — so you can make the right call for your application.
Quick Verdict
The Moldex 7667 is the stronger technical specification for most buyers: it is the only Moldex P100 multi-gas combination cartridge with a built-in ESLI, it covers formaldehyde and chlorine dioxide where the 3M 60926 does not, and it carries a higher user rating. The 3M 60926 remains a legitimate choice for facilities already standardized on the 3M 6000/7000-series platform where procurement simplicity and familiarity outweigh the feature gap.
Verdict at a glance
Moldex 7667 — Best overall features
ESLI eliminates the written change schedule burden. Formaldehyde and ClO2 coverage adds versatility. Rated 4.8/5 by verified buyers.
3M 60926 — Best for 3M platform users
Drop-in fit for any 3M 6000 or 7000-series facepiece. Broad availability. No ESLI; written change schedule required.
Moldex 7667 — Buy on WC Safety or Amazon
3M 60926 — Buy on WC Safety or Amazon
Affiliate disclosure: WC Safety earns a commission on qualifying Amazon purchases at no extra cost to you.Side-by-Side Specifications
| Specification | Moldex 7667 | 3M 60926 |
|---|---|---|
| Full name | Multi-Gas P100 Combo Smart Cartridge | P100 Multi-Gas and Vapor Respirator Cartridge |
| ESLI (End-of-Service-Life Indicator) | YES — colorimetric on gas section | NO — written change schedule required |
| Particulate rating | P100 (42 CFR 84) | P100 (42 CFR 84) |
| Organic Vapor (OV) | YES | YES |
| Acid Gas (AG) | YES | YES |
| Formaldehyde | YES | NO |
| Chlorine Dioxide (ClO2) | YES | NO |
| Compatible facepiece platform | Moldex 7000-series half-face & full-face | 3M 6000-series half-face & 7000-series full-face |
| Assemblies per respirator | 2 (one per side) | 2 (one per side) |
| Price per set (2 cartridges) | ~$18.50 | ~$30.99 |
| Price for 2 sets (full respirator) | ~$37.00 | ~$61.98 |
| User rating | 4.8 / 5 | 4.3 / 5 |
| OSHA 1910.134 change schedule required? | No — ESLI governs replacement | Yes — employer must establish written schedule |
Prices current as of June 2026. Amazon prices set by Amazon and may vary. ESLI row and formaldehyde/ClO2 rows highlighted because they represent the primary specification gaps between these two cartridges.
Head-to-Head Analysis
ESLI vs. Written Change Schedule
Under OSHA 29 CFR 1910.134(d)(3)(iii), employers must replace gas/vapor cartridges before they are exhausted. Where air concentration, humidity, and work rate are known, a written change schedule calculated using OSHA-accepted methods (such as the Wheeler-Bernstein model) satisfies this requirement. However, written schedules introduce administrative overhead: they must be documented, communicated to wearers, updated when conditions change, and retained for inspection.
The ESLI on the Moldex 7667 provides a direct, in-the-moment signal at the cartridge itself. The colorimetric indicator in the gas-phase section changes color as activated carbon approaches saturation, allowing the wearer to see — without consulting a schedule — when replacement is due. For many OSHA compliance officers, this eliminates the need to produce and maintain a formal change schedule entirely, reducing paperwork and the risk of schedule-calculation errors.
The 3M 60926 has no ESLI. Facilities using it must establish and follow a written change schedule that accounts for contaminant identity, concentration, temperature, humidity, and breathing rate. In variable or unpredictable exposure scenarios this is genuinely difficult to do accurately.
Moldex 7667
Advantage
Built-in ESLI eliminates the written change schedule for most applications. Directly visible to the wearer and supervisor during use.
3M 60926
No ESLI. Written change schedule mandatory under OSHA 1910.134. Schedule must account for contaminant levels, humidity, and work rate — a significant compliance burden in variable environments.
For more on ESLI vs. written change schedules, see our guide: ESLI vs. Written Change Schedule — Which Is Right for Your Program?
Formaldehyde and ClO2 Coverage Gap
The Moldex 7667 is approved for formaldehyde and chlorine dioxide in addition to the standard organic vapor and acid gas blend. These are not edge-case contaminants: formaldehyde is a common byproduct in woodworking, embalming, pathology labs, and resin manufacturing; chlorine dioxide is used in water treatment and food-plant disinfection.
The 3M 60926 is not approved for formaldehyde or ClO2. Workers in environments where these gases may be present alongside particulates and other vapors would need to select a different 3M cartridge assembly — potentially the 3M 6006 without integral P100 — or use a separate filter cartridge combination, which increases bulk and cost.
If your application involves any potential formaldehyde or chlorine dioxide exposure, the Moldex 7667 covers you in a single cartridge. The 3M 60926 does not.
P100 Filtration Equivalence
On particulate protection, both cartridges are functionally equivalent. Both carry NIOSH 42 CFR 84 P100 ratings, meaning they filter at least 99.97% of airborne particulates including oil-based aerosols. Neither has an advantage here — the P100 specification is standardized, and both cartridges meet it. If your primary concern is particulate control alone, consider whether a dedicated P100 filter such as the Moldex 7740 without gas-phase media might be more appropriate and cost-effective.
Price per Respirator Setup (Two Assemblies)
Both cartridges require two assemblies per respirator — one on each side of the facepiece. Pricing therefore doubles from the per-set list price:
| Cartridge | Price per set (2) | Cost for full respirator (2 sets) |
|---|---|---|
| Moldex 7667 | ~$18.50 | ~$37.00 |
| 3M 60926 | ~$30.99 | ~$61.98 |
The Moldex 7667 saves approximately $25 per respirator setup at current pricing. In a program supplying multiple workers with regular cartridge changes, this difference compounds significantly over a year. Combined with the ESLI feature, the Moldex 7667 delivers better specifications at a lower unit cost — an unusual combination in PPE procurement.
Platform Compatibility
Platform compatibility is the most common reason to choose the 3M 60926 despite its specification gaps. If your facility already uses 3M 6000-series half-face or 3M 7000-series full-face respirators, the 60926 snaps in without adapter concerns. Switching to Moldex cartridges would require replacing the facepieces as well.
Conversely, if you are evaluating a new respirator program from scratch, the Moldex 7000-series facepieces paired with the 7667 cartridge represent a competitive full system — and you avoid the 3M platform lock-in entirely. Explore the full range at the Moldex cartridge collection and the 3M cartridge collection for a complete platform comparison.
Upgrade Paths Within Each Platform
Users on the Moldex platform who need a P100 combination cartridge but do not require the full multi-gas spectrum have options: the Moldex 7367 covers OV+AG+P100 without ESLI at a lower price point, and the Moldex 7600 provides multi-gas coverage without the integrated P100 layer. The 7667 sits at the top of this stack: the most coverage, with ESLI, in a single Moldex cartridge.
On the 3M side, users who need acid gas plus OV without P100 can step down to the 3M 6006, or choose the 3M 60923 for acid gas + OV + P100 in a slightly narrower gas spectrum. None of these offer ESLI.
For a deeper look at how the Moldex combination cartridge lineup compares internally, see our guide: Moldex 7367 vs 7467 vs 7667 — Choosing the Right Combo Cartridge.
Decision Guide
Use the framework below to determine which cartridge fits your application. If you are starting a new respirator program or are open to platform change, ESLI and gas coverage tilt heavily toward the Moldex 7667. If you are locked into 3M facepieces, the 60926 remains a competent choice provided you establish and follow a written change schedule.
Choose Moldex 7667 if:
- You want built-in ESLI to simplify or eliminate written change schedules
- Your exposure profile includes formaldehyde or chlorine dioxide
- You are starting a new respirator program with no existing platform commitment
- Budget per cartridge change is a factor — Moldex 7667 costs roughly $25 less per full respirator setup
- You require the broadest combination coverage available in a single Moldex cartridge
- Workers are mobile or in variable concentration environments where a fixed change schedule is impractical
Choose 3M 60926 if:
- Your facility is standardized on 3M 6000 or 7000-series facepieces and cartridge swap-out is the only change needed
- You have an established, well-documented written change schedule already in place
- Your exposure profile does not include formaldehyde or chlorine dioxide
- Procurement consistency with other 3M consumables is a priority
- You prefer the 3M brand familiarity for safety training and compliance documentation purposes
For the broader question of whether a combination cartridge is right versus separate filter + cartridge assemblies, see: Combination Cartridge vs. Separate Filter — When Does the Combo Make Sense?
For a platform-level comparison between the Moldex 7600 multi-gas Smart cartridge and the 3M 6006, see: Moldex 7600 Smart vs 3M 6006 — Multi-Gas Cartridge Comparison
Full independent testing notes are available in our Moldex 7667 product review.
Frequently Asked Questions
What does ESLI mean on the Moldex 7667, and how does it work?
ESLI stands for End-of-Service-Life Indicator. On the Moldex 7667, it is a colorimetric strip built into the gas-phase section of the cartridge. The strip uses a chemical indicator that changes color as organic vapors or acid gases saturate the activated carbon bed. When the indicator shows the change color, the cartridge should be replaced. This provides a real-time, in-cartridge signal without requiring the wearer to track time or consult a written schedule.
Does the 3M 60926 have an ESLI?
No. The 3M 60926 does not include an End-of-Service-Life Indicator. Under OSHA 29 CFR 1910.134(d)(3)(iii), facilities using the 60926 must establish a written change schedule based on contaminant identity, air concentration, humidity, temperature, and breathing rate. The schedule must be documented and followed by all wearers. This compliance requirement is entirely avoidable by switching to an ESLI-equipped cartridge such as the Moldex 7667.
Is the Moldex 7667 approved for formaldehyde, and why does the 3M 60926 lack that coverage?
Yes. The Moldex 7667 carries approval for formaldehyde and chlorine dioxide exposure in addition to organic vapors and acid gases. The 3M 60926 is not rated for formaldehyde or ClO2; 3M uses different cartridge designations for those applications. If your work environment may involve formaldehyde — woodworking, embalming, pathology, resin manufacturing — the 3M 60926 is not a compliant selection for that exposure, and the Moldex 7667 would be the appropriate combination cartridge choice.
Are both cartridges P100 rated, and is there any difference in particulate filtration?
Both the Moldex 7667 and the 3M 60926 carry NIOSH 42 CFR 84 P100 ratings, meaning they filter at least 99.97% of airborne particles including oil-based aerosols. The P100 specification is standardized — there is no performance difference in the particulate filtration layer between these two cartridges. Selection between them should be driven by gas-phase coverage and ESLI availability, not by P100 performance.
How many cartridges do I need per respirator for each model?
Both cartridges require two assemblies per respirator — one cartridge on each side of the facepiece. The Moldex 7667 is sold in sets of two, priced at approximately $18.50 per set, for a full-respirator cost of roughly $37.00. The 3M 60926 is also sold in sets of two at approximately $30.99 per set, making a full setup approximately $61.98. The Moldex 7667 delivers a cost saving of around $25 per change event in addition to its superior gas coverage and ESLI feature.
Can I use Moldex 7667 cartridges on a 3M facepiece, or vice versa?
No. Moldex and 3M use different bayonet-style attachment standards. The Moldex 7667 is designed exclusively for Moldex 7000-series half-face and full-face respirators. The 3M 60926 fits 3M 6000-series half-face and 3M 7000-series full-face respirators. Cross-brand compatibility does not exist between these two systems. If you are on a 3M facepiece platform, you would need to replace both facepieces and cartridges to move to the Moldex 7667.
What is the user rating difference between these two cartridges?
The Moldex 7667 carries an average verified buyer rating of 4.8 out of 5. The 3M 60926 carries an average of approximately 4.3 out of 5. The Moldex 7667's higher rating is consistent with user comments about the value of the ESLI feature and confidence in cartridge change timing. The 3M 60926 ratings reflect general satisfaction but include recurring comments about the absence of ESLI and the need to track change schedules manually.
What is a written change schedule and how do I create one for the 3M 60926?
A written change schedule is an employer-prepared document specifying the maximum service life for a cartridge under defined use conditions. OSHA requires it when no ESLI is present. The schedule must account for the contaminants present, their air concentrations, ambient humidity and temperature, and the work rate of the wearer. OSHA's own guidance and the Wheeler-Bernstein model are accepted calculation methods. The schedule must be in writing, communicated to wearers, updated when conditions change, and retained as part of your written respiratory protection program under OSHA 1910.134. See our guide ESLI vs. Written Change Schedule for a step-by-step breakdown.
Which cartridge is better for variable or unpredictable exposure concentrations?
The Moldex 7667 with ESLI is the stronger choice in variable exposure environments. Written change schedules are built around predicted concentrations; when actual concentrations fluctuate — due to process changes, seasonal variation, or unplanned releases — a fixed schedule may result in cartridges being changed too early (wasteful) or too late (unsafe). The ESLI responds to actual cumulative exposure rather than a calculated estimate, making it inherently more reliable when conditions are not constant.
Does the Moldex 7667 replace the need for a written respiratory protection program?
No. OSHA 29 CFR 1910.134 requires a written respiratory protection program regardless of whether the cartridge has an ESLI. The program must cover hazard identification, fit testing, medical evaluation, training, and maintenance. What the ESLI eliminates is specifically the written cartridge change schedule component under 1910.134(d)(3)(iii). All other program elements remain mandatory. Consult your industrial hygienist or safety officer to confirm your program is complete.
What Moldex facepiece should I pair with the Moldex 7667 cartridge?
The Moldex 7667 is compatible with the full Moldex 7000-series half-face respirator lineup and Moldex full-face respirators using the same bayonet standard. For most industrial applications, the Moldex 7000-series half-face respirator is the standard pairing. For higher-hazard or full-face-shield applications, a Moldex full-face model is appropriate. The cartridge interface is the same across the product line, so the 7667 will seat securely in any compatible Moldex 7000-series facepiece without adapters.
When should I choose the Moldex 7367 instead of the 7667?
The Moldex 7367 covers OV + AG + P100 but does not carry ESLI and does not cover formaldehyde or chlorine dioxide. It is a viable choice when ESLI is not required by your safety program, your exposure profile does not include formaldehyde or ClO2, and you want to reduce per-cartridge cost. If any of those conditions are not met — particularly if ESLI is important for your compliance posture — the 7667 is the appropriate upgrade. For a complete breakdown of the Moldex combination cartridge lineup, see our guide: Moldex 7367 vs 7467 vs 7667.