Best 3M Cartridge for Acid Gas (2026): 60923 vs 6003 vs 6002 Ranked
The Best 3M Cartridge for Acid Gas Is the 60923 — OV, Acid Gas and P100 in One
Reviewed by WC Safety Editorial — Last updated 2026-06-30.
Acid gases — chlorine (Cl₂), hydrogen chloride (HCl), sulfur dioxide (SO₂) and chlorine dioxide (ClO₂) — show up in water and wastewater treatment, chemical processing, pool-chemical handling, battery charging rooms and acid-catalyzed coatings. The best-selling 3M answer is the 3M 60923, which pairs an acid-gas + organic-vapor sorbent with an integrated P100 filter — covering acid gas, solvent vapor and particulate in one cartridge. Always confirm the cartridge against your safety data sheets and a hazard assessment — see our respirator cartridge selection guide and the NIOSH cartridge color chart.
Because most acid-gas environments also carry some organic vapor, the combined OV/AG cartridges (60923, 6003) are usually the practical choice over a pure acid-gas cartridge. We rank both, plus the acid-only 6002 for single-hazard jobs and the Secure Click version. For the brand-agnostic view, see our best respirator cartridge for acid gas guide.
Editorial verdict: The 3M 60923 OV/acid-gas/P100 is the best 3M acid-gas cartridge for most buyers — it covers acid gas, organic vapor and particulate in a single cartridge. If your air is dust-free and OV-free, the pure acid-gas 6002 is the lighter, single-hazard option.
All bayonet picks fit the 3M 6000/6500/7500 half masks and 6800/6900 full facepieces. For chlorine and acid environments many buyers pair them with a 3M full-face respirator for eye protection.
$19.90
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$20.34
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$23.00
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$39.89
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The Ranked 3M Picks
1. 3M 60923 P100 Acid Gas Organic Vapor Respirator Cartridge — Best 3M Cartridge for Acid Gas Overall
NIOSH: OV + Acid Gas + P100 · 3M bayonet · Street price ≈ $19.90
The 3M 60923 is the most popular 3M acid-gas cartridge for good reason: it covers chlorine, HCl, SO₂ and chlorine dioxide plus organic vapor, with an integrated P100 filter for any mist or particulate. One cartridge for the realistic acid-process mix — solvent vapor and acid gas rarely travel alone. The clear default for water treatment and chemical handling.
→ Among the highest-volume 3M acid-gas search terms ("60923 filter", "3M 60923 respirator").
Pros
- Acid gas + OV + P100 in one
- Covers the realistic mixed exposure
- 99.97% particulate built-in
- Bayonet fit across 3M masks
Cons
- Costs more than gas-only 6003
- Heavier than a bare acid cartridge
- OV bed wasted if truly acid-only
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2. 3M 6003 Organic Vapor and Acid Gas Respirator Cartridge — Best Gas-Only OV + Acid Gas
NIOSH: OV + Acid Gas · Gas-only · 3M bayonet · Street price ≈ $20.34
The 3M 6003 is the gas-only version of the 60923 — organic vapor plus acid gas, no particulate layer — for clean, dust-free atmospheres. Cheaper and lighter; add a 501 retainer and 2096 P100/acid-gas filter if particulate appears. The value pick when you don't need integrated P100.
Pros
- OV + acid gas at lower cost
- Light, low profile
- Upgradeable with a prefilter
Cons
- Gas-only — no particulate
- Needs 501 + prefilter for dust
- No ESLI
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3. 3M 6002 Acid Gas Respirator Cartridge — Best Pure Acid-Gas Cartridge
NIOSH: Acid Gas · Gas-only · 3M bayonet · Street price ≈ $23.00
The 3M 6002 is acid-gas only — no organic-vapor bed — for environments where acid gas is the sole hazard and you want the simplest, most targeted protection. It's a niche pick, since most acid environments also carry OV; verify with your SDS before choosing it over the 6003.
Pros
- Targeted pure acid-gas protection
- Simple, single-hazard cartridge
- Bayonet fit
Cons
- No organic-vapor coverage
- Rarely the right call (OV usually co-present)
- Gas-only
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4. 3M 60922 P100 Acid Gas Respirator Cartridge — Best Acid Gas + Particulate (No OV)
NIOSH: Acid Gas + P100 · 3M bayonet · Street price ≈ $39.89
The 3M 60922 pairs pure acid-gas protection with an integrated P100 filter — acid gas plus dust/mist, but no organic vapor. Useful where acid gas and particulate are present but solvents are not (some metal-treatment and battery applications). If OV is also present, step to the 60923.
Pros
- Acid gas + P100 in one
- No prefilter to stock
- Good for acid + dust, no-OV jobs
Cons
- No organic-vapor coverage
- Pricier than gas-only 6002
- Narrow use case
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5. 3M 2096 P100 Respirator Filter Nuisance Acid Gas — Best Add-On Acid-Gas Particulate Filter
NIOSH: P100 + nuisance acid-gas relief · pancake filter · Street price ≈ $18.06
The 3M 2096 P100 filter is a flat P100 filter with nuisance-level acid-gas relief that attaches to a 6001/6003 via the 501 retainer. It adds 99.97% particulate protection plus minor acid-odor knock-down to gas-only cartridges. The OV/acid relief is nuisance-level only and never replaces a primary acid-gas bed.
Pros
- Adds P100 to gas-only cartridges
- Nuisance acid-gas odor relief
- Low-cost, low-profile
Cons
- Requires the 501 retainer
- Nuisance relief only — not primary protection
- Two-piece stack
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6. 3M Secure Click D80923 P100 OV/AG Combination Cartridge — Best Secure Click Acid-Gas Cartridge
NIOSH: OV + Acid Gas + P100 · 3M Secure Click HF-800 · Street price ≈ $61.12
The 3M Secure Click D80923 brings OV/acid-gas/P100 coverage to the HF-800 Secure Click masks with positive push-to-seat seating. Choose it if you run the Secure Click platform — it does not fit bayonet masks.
Pros
- OV/acid gas/P100 on Secure Click
- Positive, low-profile seating
- Modern HF-800 platform
Cons
- Secure Click masks only
- Premium price
- Smaller installed base
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Shop These 3M Cartridges
- 3M 60923 P100 Acid Gas Organic Vapor Respirator Cartridge $19.90 Check Price on Amazon →
- 3M 6003 Organic Vapor and Acid Gas Respirator Cartridge $20.34 Check Price on Amazon →
- 3M 6002 Acid Gas Respirator Cartridge $23.00 Check Price on Amazon →
- 3M 60922 P100 Acid Gas Respirator Cartridge $39.89 Check Price on Amazon →
- 3M 2096 P100 Respirator Filter Nuisance Acid Gas $18.06 Check Price on Amazon →
- 3M Secure Click D80923 P100 OV/AG Combination Cartridge $61.12 Check Price on Amazon →
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Quick Comparison Table
| 3M Cartridge | NIOSH Protection | Particulate? | Best For |
|---|---|---|---|
| 3M 60923 | OV + Acid Gas + P100 | P100 built-in | Best overall — acid + OV + dust |
| 3M 6003 | OV + Acid Gas | Add 501 + prefilter | Gas-only, dust-free value |
| 3M 6002 | Acid Gas only | Add 501 + prefilter | Pure acid gas, no OV |
| 3M 60922 | Acid Gas + P100 | P100 built-in | Acid + dust, no OV |
| 3M 2096 | P100 + nuisance acid | Is the particulate | Add P100 to a 6001/6003 |
| D80923 Secure Click | OV + Acid Gas + P100 | P100 built-in | Secure Click HF-800 users |
How to Match the 3M Cartridge to Your Hazard
Confirm the acid gas. SDS Section 8 will name chlorine, hydrogen chloride, sulfur dioxide or chlorine dioxide. The white-banded acid-gas sorbent (6002/6003/60922/60923) is the match.
Is organic vapor also present? Almost always yes in real plants — choose an OV/acid-gas cartridge (60923 with P100, or 6003 gas-only). Only choose the pure 6002 when the SDS shows acid gas alone.
Particulate in the air? Mist, dust or fume → use a P100 version (60923/60922) or add a 2096 to a gas-only cartridge.
Add eye protection and a change schedule. Chlorine and acid gases irritate eyes — consider a full-face respirator. Acid-gas cartridges have no reliable odor warning at low levels, so a documented change-out schedule is essential. Fit-test per OSHA 1910.134.
Compatible 3M Respirators
Every bayonet-mount cartridge here fits the 3M 6000, 6500 (6501QL/6502QL/6503QL), and 7500 series half-mask respirators and the 6800/6900 full facepieces. For full-face eye protection in heavier exposures, see our best 3M full-face respirator guide. Secure Click cartridges (D-series) fit only the 3M Secure Click HF-800 masks. Browse all options in respirator filters & cartridges.
Frequently Asked Questions
What is the best 3M cartridge for acid gas?
The 3M 60923 is the best 3M acid-gas cartridge for most users. It is NIOSH-approved for acid gases (chlorine, hydrogen chloride, sulfur dioxide, chlorine dioxide) and organic vapor, with an integrated P100 particulate filter — covering the realistic mixed exposure in one cartridge. For pure acid-gas, dust-free work the 6002 is a lighter single-hazard option.
What acid gases does the 3M 60923 protect against?
The 60923 is NIOSH-approved for chlorine (Cl₂), hydrogen chloride (HCl), sulfur dioxide (SO₂) and chlorine dioxide (ClO₂), plus organic vapor and 99.97% P100 particulate. Confirm your specific gases and concentrations on the SDS and a hazard assessment before selecting it.
3M 60923 vs 6003 — which acid-gas cartridge?
Both cover organic vapor + acid gas. The 60923 adds an integrated P100 particulate filter; the 6003 is gas-only. Choose the 60923 when dust or mist is present (most real acid-process areas), and the cheaper, lighter 6003 only for genuinely clean atmospheres.
Does the 3M 60923 protect against chlorine?
Yes. Chlorine is one of the acid gases the 60923 (and 6002, 6003, 60922) are NIOSH-approved for, which makes them common choices for water treatment and pool-chemical work. Because chlorine irritates the eyes, many users pair the cartridge with a 3M full-face respirator.
Do I need an organic-vapor cartridge or an acid-gas cartridge?
If only acid gas is present, a pure acid-gas cartridge (6002) works. But most acid environments also carry organic vapor, so a combined OV/acid-gas cartridge (6003 or 60923) is usually the safer, more practical choice. Let the SDS decide — don't guess.
Is the 3M 6002 worth buying over the 6003?
Rarely. The 6002 is acid-gas only, while the 6003 adds organic-vapor protection for a similar price. Unless your hazard assessment confirms acid gas with zero organic vapor, the 6003 is the more flexible buy. The 6002 is a niche, single-hazard cartridge.
How long does a 3M acid-gas cartridge last?
Service life depends on the acid-gas concentration, humidity, temperature and breathing rate, and there is no end-of-service-life indicator on the 60923/6003. Acid gases give poor low-level odor warning, so a documented OSHA change-out schedule is essential. Replace on schedule or immediately at any breakthrough.
Which 3M masks fit the 60923 cartridge?
The 60923 uses the 3M bayonet mount and fits the 6000, 6500 (quick-latch) and 7500 series half masks plus the 6800/6900 full facepieces. Browse 3M half-mask respirators; for eye protection in acid environments see our full-face respirator guide.
Does the 3M 60923 include a particulate filter?
Yes. The 60923 has an integrated P100 filter rated at 99.97% efficiency, so it protects against acid gas, organic vapor and particulate in one cartridge — no separate prefilter or 501 retainer needed. The gas-only 6003 does not include particulate filtration.
What's the difference between the 60923 and 60922?
The 60923 covers organic vapor + acid gas + P100; the 60922 covers acid gas + P100 but no organic vapor. Choose the 60923 if any solvent vapor is present (usually the case), and the 60922 only for acid-plus-dust environments with no OV.
Can I use a 3M acid-gas cartridge for sulfur dioxide?
Yes. Sulfur dioxide (SO₂) is one of the acid gases the 6002, 6003, 60922 and 60923 are NIOSH-approved for. Verify the SO₂ concentration is within the cartridge's assigned protection factor and build a change schedule, since SO₂ has limited low-level odor warning.
Is the 3M 60923 NIOSH approved?
Yes. The 60923 is NIOSH-approved under 42 CFR Part 84 as an OV/acid-gas + P100 combination cartridge; the approval number is printed on the cartridge body. NIOSH approval covers the complete cartridge-and-mask assembly used together.
Does the 3M 2096 filter replace an acid-gas cartridge?
No. The 2096 is a P100 particulate filter with nuisance-level acid-gas relief only — it knocks down odor but does not provide rated acid-gas protection. It is meant to add particulate filtration on top of a real acid-gas cartridge like the 6003, not to replace one.
Do 3M acid-gas cartridges come in pairs?
Yes. 3M bayonet cartridges, including the 60923, 6003 and 6002, are sold and used as a matched pair — one per port of a dual-cartridge mask. Always run two identical cartridges; never mix cartridge types between ports.
Should I use a full-face respirator for acid gas?
Often, yes. Chlorine, HCl and SO₂ irritate the eyes, and a half mask leaves them exposed. For higher concentrations or sustained acid-gas work a 3M full-face respirator with a 60923 protects eyes and face together and raises the assigned protection factor. Base the decision on your exposure assessment.
How does the 3M acid-gas cartridge compare to Honeywell or Moldex?
All three offer OV/acid-gas combination cartridges with comparable NIOSH coverage; compatibility is the deciding factor, since cartridges only fit their own brand's masks. If you run 3M masks, use 3M cartridges. For cross-brand context see our acid-gas cartridge guide.
Related 3M Cartridge Guides
- Best 3M Cartridge for Solvents & Organic Vapor
- Best 3M Cartridge for Acid Gas
- Best 3M Multi-Gas Cartridge
- Best 3M Cartridge for Spray Paint
- Best 3M Respirator Cartridges (2026)
- 3M 60921 vs 60923 vs 60926 Compared
- 3M Respirator Filter & Cartridge Selection Chart
- How to Choose a Respirator Cartridge
- Respirator Cartridge Color Chart (NIOSH Codes)
- Shop all 3M Respirator Cartridges & Filters
Affiliate disclosure & editorial independence
WC Safety participates in the Amazon Services LLC Associates Program and earns from qualifying purchases made through links on this page, at no extra cost to you. Rankings are made independently — no manufacturer pays for placement. Cartridge selection must follow a site-specific hazard assessment under OSHA 29 CFR 1910.134. This guide is informational only and is not medical, legal, or regulatory advice. Full affiliate disclosure.
Reviewed by Steven Eaton — WC Safety Editorial
Last updated 2026-06-30. Sources: NIOSH 42 CFR Part 84 approval database, OSHA 29 CFR 1910.134, and 3M technical data sheets. Zero sponsored rankings; no fabricated test claims — all analysis grounded in NIOSH certification data and published 3M specifications. Cartridge choices must be confirmed against your own hazard assessment and SDS.