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Industrial Safety Equipment & PPE — ANSI/OSHA Compliant
Industrial Safety Equipment & PPE — ANSI/OSHA Compliant
May 12, 2026 Updated July 25, 2026 Steven Eaton

Honeywell North 7582P100L Acid Gas P100 Cartridge Review: AG+P100 for Chemical Environments

WC Safety Editorial Verdict: 4.3/5

WC Safety Editorial Verdict — 4.3/5. The Honeywell North 7582P100L is a correctly-specified acid gas + P100 combination cartridge for facilities where inorganic acid gases (HCl, HF, SO₂, Cl₂, HBr, HCN, formaldehyde) are the documented primary hazard and organic vapors are confirmed absent — its NIOSH 42 CFR 84 approval and 99.97% P100 particulate layer cover both the gas and the dust/mist in one bayonet-mount cartridge. We dock it half a point only because the coverage is deliberately narrow: if a solvent or organic vapor could also be present, the broader 7583P100L OV+AG+P100 is the safer, better-value pick, and buyers should confirm the hazard against the how to choose a respirator cartridge guide before ordering.

Is the Honeywell North 7582P100L the Right Acid Gas + P100 Cartridge for Your Chemical Environment?

The Honeywell North 7582P100L is a NIOSH-approved acid gas + P100 combination cartridge for environments where hydrogen chloride (HCl), hydrogen fluoride (HF), sulfur dioxide (SOâ‚‚), chlorine (Clâ‚‚), hydrogen bromide (HBr), hydrogen cyanide (HCN), and formaldehyde (HCHO) are the primary respiratory hazards. The P100 component handles particulates at 99.97% efficiency simultaneously.

Editorial Verdict — 7582P100L: 4.3/5
Specialized acid gas + P100 for environments where acid gases are the documented primary hazard and organic vapors are confirmed absent. If OV may also be present, the broader 7583P100L OV+AG+P100 is better value at lower cost.

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Specifications

Feature Details
Model 7582P100L
Gas Protection Acid gases: HCl, HF, SOâ‚‚, Clâ‚‚, HBr, HCN, HCHO
Particulate Protection P100 — ≥99.97% at 0.3 microns
Sold As Pair (L suffix)
NIOSH Approval Yes — 42 CFR Part 84
Mount Honeywell North bayonet

Acid Gases Covered by the 7582P100L

The 7582P100L uses a specialized sorbent material that targets inorganic acid gases. NIOSH-approved gases include:

  • HCl (Hydrogen chloride / hydrochloric acid mist) — metal pickling, semiconductor fabrication, chemical synthesis
  • HF (Hydrogen fluoride) — glass etching, semiconductor manufacturing, petroleum refining
  • SOâ‚‚ (Sulfur dioxide) — combustion processes, paper pulping, chemical plants
  • Clâ‚‚ (Chlorine gas) — water treatment, chemical manufacturing, pulp bleaching
  • HBr (Hydrogen bromide) — semiconductor processing, organic synthesis
  • HCN (Hydrogen cyanide) — electroplating, fumigation (short-duration only)
  • HCHO (Formaldehyde) — laboratory work, embalming, composite manufacturing

Important: the 7582P100L does NOT protect against organic vapors. If your chemical environment also contains organic solvents, use the 7583P100L OV+AG+P100 which provides broader coverage at similar or lower cost.

7582P100L vs. 7583P100L: Why the 7583 Usually Wins

Attribute 7582P100L vs. 7583P100L
Acid gas protection Yes (both)
OV protection No
P100 protection Yes (both)
Price Higher for less coverage
Best use case Pure acid gas environments only

In most industrial environments, organic vapors are present alongside acid gases. The 7583P100L adds OV protection at a lower price than the 7582P100L — making it the better default unless your industrial hygiene assessment has formally confirmed organic vapors are absent.

Primary Applications for the 7582P100L

  • Metal pickling and surface treatment (HCl, Hâ‚‚SOâ‚„ mist, HF for aluminum)
  • Semiconductor fabrication cleanroom processes involving HF, HCl
  • Chlorine handling in water treatment plants (Clâ‚‚)
  • Paper and pulp bleaching operations (Clâ‚‚, SOâ‚‚)
  • Laboratory work with acid gas reagents without solvent exposure
  • Formaldehyde-containing environments: pathology labs, embalming, composite panel manufacturing

Compatible with all Honeywell North bayonet respirators including the North 5500 Series half-face, North 7600 and 5400 Series full-face respirators. Not compatible with 3M bayonet respirators — Honeywell North and 3M use different mounting systems.

Browse all Honeywell North respirator cartridges or see the full respirator cartridge and filter selection at WC Safety.

Frequently Asked Questions

Q: What acid gases does the 7582P100L protect against?

A: The 7582P100L provides NIOSH-approved protection against hydrogen chloride (HCl), hydrogen fluoride (HF), sulfur dioxide (SOâ‚‚), chlorine (Clâ‚‚), hydrogen bromide (HBr), hydrogen cyanide (HCN), and formaldehyde (HCHO). It does not protect against organic vapors or ammonia.

Q: Does the 7582P100L protect against organic vapors?

A: No — the 7582P100L is an acid gas + P100 cartridge. It does not contain the activated carbon required for organic vapor adsorption. If organic vapors may be present alongside acid gases, use the 7583P100L (OV+AG+P100) instead.

Q: When should I choose 7582P100L over 7583P100L?

A: Only when your industrial hygiene assessment has formally documented that organic vapors are not present in your work environment. If there is any uncertainty, the 7583P100L provides broader coverage at lower cost and is generally the preferred choice.

Q: Is the 7582P100L approved for hydrogen cyanide?

A: Yes — the 7582P100L is NIOSH-approved for hydrogen cyanide (HCN). However, HCN has an IDLH of only 50 ppm, and concentrations above the OSHA PEL (10 ppm TWA) require careful engineering control verification before relying on a half-face APF 10 respirator.

Q: Can I use the 7582P100L for formaldehyde exposure?

A: Yes — the 7582P100L provides NIOSH-approved formaldehyde protection under OSHA 1910.1048 (Formaldehyde standard). The OSHA PEL for formaldehyde is 0.75 ppm TWA; the STEL is 2 ppm. A half-face respirator with APF 10 protects up to 7.5 ppm TWA.

Q: How long do 7582P100L cartridges last?

A: Acid gas cartridge service life depends on the specific gas concentration, temperature, humidity, and breathing rate. OSHA requires a written change schedule. Replace immediately if you detect any acid gas odor or taste — most acid gases have IDLH values low enough that taste/odor detection means you are already approaching unacceptable exposure levels.

Q: What respirators are compatible with the 7582P100L?

A: All Honeywell North bayonet-mount respirators: the 5500 Series half-face, 7600 Series full-face, and 5400 Series full-face. Not compatible with 3M, MSA, or other brands.

Q: Does the 7582P100L protect against chlorine gas?

A: Yes — Cl₂ (chlorine gas) is one of the NIOSH-approved gases for the 7582P100L. OSHA PEL for chlorine is 1 ppm ceiling. APF 10 (half-face) provides protection up to 10 ppm. For chlorine concentrations above 10 ppm, use a full-face respirator (APF 50) with 7582P100L cartridges.

Q: Is the 7582P100L NIOSH-approved?

A: Yes — NIOSH-approved under 42 CFR Part 84 for acid gas + P100 protection when used with compatible Honeywell North bayonet respirators.

Q: What is the OSHA APF with 7582P100L cartridges?

A: APF 10 with a North half-face respirator; APF 50 with a North full-face respirator. The cartridge type determines the chemical coverage; the respirator type determines the protection factor.

Q: Can I use 7582P100L for sulfur dioxide in a paper mill?

A: Yes — SO₂ is a listed gas for the 7582P100L. However, paper mill environments often also contain organic compounds — verify with an IH assessment whether 7583P100L (with OV coverage) is more appropriate for your specific process.

Q: What happens if I use 7582P100L in an environment with organic vapors?

A: Organic vapors would pass through the acid gas sorbent unimpeded — the cartridge would provide no protection against them. This is a serious health hazard. Always verify the specific chemical hazards in your environment with an industrial hygiene assessment before selecting cartridges.

Q: Where can I buy the Honeywell North 7582P100L?

A: Available at WC Safety. Browse the full Honeywell North cartridge lineup.

OSHA Assigned Protection Factors: Respirator Type Determines Protection Level

A critical and frequently misunderstood principle: the protection factor (APF) is determined by the respirator type, not the cartridge. The cartridge determines which chemicals are protected against; the facepiece type determines how much protection is provided relative to the permissible exposure limit (PEL).

Respirator Type OSHA APF (29 CFR 1910.134 App A)
Half-face air-purifying (e.g., North 5500 Series) APF 10 — protects up to 10× the PEL
Full-face air-purifying (e.g., North 7600/5400 Series) APF 50 — protects up to 50× the PEL
Powered air-purifying (PAPR), half-face APF 50
Powered air-purifying (PAPR), full-face/hood APF 1000

Example: if the OSHA PEL for a solvent is 100 ppm, a half-face respirator (APF 10) with the appropriate cartridge protects up to 1,000 ppm; a full-face (APF 50) protects up to 5,000 ppm. If your measured air concentration exceeds the APF × PEL product, you need a higher APF respirator or must implement engineering controls to reduce concentration.

OSHA 1910.134 Cartridge Change Schedule Requirements

OSHA 29 CFR 1910.134(d)(3)(iii)(B) requires that atmospheres immediately dangerous to life or health (IDLH), oxygen-deficient atmospheres, and environments with gas or vapor cartridges must have a cartridge change schedule based on objective information. Specifically, the standard requires:

  • A written change schedule based on objective data — measured concentrations, published service life tables, or ESLI (end-of-service-life indicator) performance data
  • The change schedule must address the specific chemicals present, their concentrations, temperature, humidity, and work rate
  • Immediate replacement when the wearer detects any odor, taste, or irritation through the cartridge — this indicates breakthrough and potential saturation
  • Cartridges must be replaced before being stored and reused — carbon that has partially adsorbed contaminants may release them during storage and re-entry
  • Written records of the change schedule must be made available to employees upon request

Failure to maintain a written cartridge change schedule is one of the most commonly cited OSHA violations in respiratory protection programs. If you are building or auditing a respiratory protection program, the OSHA Small Entity Compliance Guide for Respiratory Protection (OSHA 3384) provides a detailed walkthrough of change schedule requirements.

Regulatory Standards for Acid Gas Environments

Several OSHA and regulatory standards specifically address the acid gases covered by the 7582P100L:

  • HF (Hydrogen Fluoride): OSHA PEL 3 ppm TWA; ACGIH TLV 0.5 ppm ceiling; NIOSH IDLH 30 ppm. Semiconductor and glass etching operations are primary regulated applications
  • HCl (Hydrogen Chloride): OSHA PEL 5 ppm ceiling; ACGIH TLV 2 ppm ceiling; NIOSH IDLH 50 ppm. Metal pickling and chemical synthesis
  • Clâ‚‚ (Chlorine): OSHA PEL 1 ppm ceiling; ACGIH TLV 0.1 ppm TWA; NIOSH IDLH 10 ppm. Water treatment and chlor-alkali operations
  • SOâ‚‚ (Sulfur Dioxide): OSHA PEL 5 ppm TWA; ACGIH TLV 0.25 ppm TWA; NIOSH IDLH 100 ppm. Paper/pulp and combustion applications
  • HCHO (Formaldehyde): OSHA PEL 0.75 ppm TWA; STEL 2 ppm; NIOSH IDLH 20 ppm. OSHA 1910.1048 sets stringent requirements for formaldehyde programs

For all acid gas applications, verify that your measured workplace concentrations multiplied by the appropriate APF remain within safe limits for the respirator type you select.

Additional Frequently Asked Questions

Q: Does the 7582P100L require a special written respiratory protection program for acid gas applications?

A: Yes — all atmosphere-supplying and air-purifying respirators used for protection against gases and vapors require a full written respiratory protection program per OSHA 29 CFR 1910.134. This includes exposure assessment, cartridge selection rationale, change schedule, fit testing, training, and program evaluation.

Q: Can the 7582P100L be used for swimming pool chlorination work?

A: Commercial pool chlorination uses high concentrations of chlorine gas or sodium hypochlorite. The 7582P100L provides Cl₂ protection — but verify that concentrations remain within the APF limits for your respirator type. For high-concentration chlorine work (chlorine gas leak response), SCBA or air-supplied respirators may be required.

Q: What is the difference between HCl gas and hydrochloric acid mist?

A: HCl gas is adsorbed by the acid gas sorbent in the 7582P100L; hydrochloric acid mist (fine droplets) is captured by the P100 filter. The 7582P100L addresses both forms because it combines gas-phase adsorption and particulate filtration. This is important for pickling operations where both HCl vapor and mist may be generated.

Q: Is the 7582P100L approved for cyanide compounds beyond HCN?

A: The 7582P100L is specifically approved for hydrogen cyanide (HCN) gas. Other cyanide compounds (sodium cyanide dust, potassium cyanide dust) are particles that are captured by the P100 filter. More complex cyanide chemistry (nitrile compounds, organic cyanides) may fall under the OV classification — confirm with your IH for specific compounds.

Q: How does the acid gas sorbent in the 7582P100L work?

A: Acid gas cartridges typically use impregnated activated carbon or specialized chemical adsorbents (such as alkali-impregnated carbon) that react with the acid gas to form stable salts. Unlike physisorption (used in standard OV cartridges), acid gas removal involves chemisorption — a chemical reaction that is more permanent and less reversible. This means acid gas capacity is harder to regenerate and cartridges should never be reused after breakthrough.

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Disclosures & editorial standards
WC Safety participates in the Amazon Services LLC Associates Program. Outbound Amazon links are affiliate links. We accept no manufacturer payment, sponsorship, or product samples. This content is not medical, legal, or regulatory advice. Safety equipment selection is governed by applicable OSHA standards and your facility's safety program.

Pros & Cons

Pros
  • AG+P100 in one cartridge — handles acid gas and 99.97% particulate simultaneously, no separate filter or retainer to stock
  • NIOSH-approved under 42 CFR Part 84 for seven named acid gases including HCl, HF, SOâ‚‚, Clâ‚‚, HBr, HCN and formaldehyde
  • Sold as a matched pair (L suffix) so you always replace both sides on the same change-out schedule
  • Honeywell North bayonet mount drops onto North 5500, 7700 and 5400 facepieces without adapters
  • Magenta P100 banding makes the particulate rating easy to verify at a glance during pre-use inspection
  • Combination design simplifies OSHA 1910.134 change-out tracking versus mixing a gas cartridge with a stacked pre-filter
Cons
  • No organic vapor protection — useless against solvents, fuels and most paint/coating vapors
  • Acid gas cartridges have no ESLI for most of these gases, so change-out must run on a calculated schedule not on smell or breakthrough
  • North bayonet mount is brand-specific — will not fit 3M, Moldex or other facepieces
  • Narrower coverage than the 7583P100L OV+AG+P100 for often similar shelf cost, so over-buying a single-gas cartridge can cost more per protected hazard

Who It's For

Buy it if:

  • Workers in metal pickling, semiconductor fab, glass etching or chlor-alkali operations where acid gas is the confirmed primary hazard
  • Water-treatment and pulp-bleaching crews exposed to chlorine or sulfur dioxide plus particulate
  • Safety managers standardized on Honeywell North 5500/7700 half- and full-face facepieces
  • Operations that want a single combination cartridge instead of stocking a gas cartridge plus a separate P100 disc and retainer

Look elsewhere if:

  • Anyone facing organic vapors or solvents — choose the 7583P100L OV+AG+P100 or a dedicated OV cartridge instead
  • Crews running 3M, Moldex or other non-North facepieces, since the bayonet mount is not cross-compatible
  • Buyers who only need particulate protection and would overpay for unused acid gas sorbent

Related Resources

Frequently Asked Questions

Who actually needs an acid gas + P100 cartridge instead of a plain P100?

You need the 7582P100L only when an acid gas — HCl, HF, SO₂, Cl₂, HBr, HCN or formaldehyde — is present in addition to particulate. If your exposure assessment shows only dust, mist or fume with no acid gas, a particulate-only filter such as the one reviewed in our honeywell north 7580p100 review is the correct and cheaper choice. Never buy gas-cartridge protection you cannot tie to a documented airborne contaminant.

How do I confirm the 7582P100L is right for my specific hazard?

Start from an air-monitoring or exposure assessment that names the contaminant, then match the gas to the cartridge sorbent. The 7582P100L is approved only for the listed inorganic acid gases. Walk the decision with our how to choose a respirator cartridge guide so you pair the right sorbent to the right hazard and confirm assigned protection factor for your facepiece class.

7582P100L vs 7583P100L — which combination cartridge is the better buy?

The 7582P100L covers acid gas + P100 only; the 7583P100L adds organic vapor on top of acid gas and P100. If there is any chance of solvent or organic vapor exposure, the broader 7583P100L is the safer pick and often costs about the same, so it is usually the better value — see the honeywell north 7583p100l review. Choose the 7582P100L only when organic vapors are confirmed absent and you want to avoid paying for sorbent you will not use.

How does the 7582P100L compare to the 7581P100L?

The 7581P100L is an organic vapor + P100 cartridge, while the 7582P100L is acid gas + P100 — they protect against opposite gas families. Pick based on which hazard your monitoring documents: solvents and OV point to the 7581P100L (see the honeywell north 7581p100l review), acid gases point to the 7582P100L. They are not interchangeable.

Is the P100 rating on the 7582P100L any different from a P95?

Yes. P100 filters at least 99.97% of 0.3-micron particles and is oil-proof, versus 95% for a P95. Because the 7582P100L is only sold in the P100 class, you get the highest particulate efficiency NIOSH offers for negative-pressure cartridges, which matters in chemical environments where mists and acid aerosols accompany the gas.

Does buying the combination cartridge save money versus a gas cartridge plus separate P100?

For acid gas plus particulate it usually does, because you stock one part number, replace both layers on one schedule, and avoid the separate retainer and pre-filter disc some setups require. The trade-off is that a combination cartridge is discarded as a unit, so if your particulate load is heavy and the gas sorbent is barely used you may change out sooner than a stacked system would require.

How long does the 7582P100L last before I must change it?

There is no universal number — service life depends on gas concentration, humidity, breathing rate and temperature. Under OSHA 1910.134 you must establish a written change-out schedule based on a math model or manufacturer data rather than waiting to smell breakthrough, since most acid gases give poor warning properties. Our respirator cartridge esli guide explains how to build that schedule.

Can I rely on smell or taste to tell me the 7582P100L is spent?

No, and this is a common and dangerous mistake. Several acid gases the 7582P100L covers have poor or no warning properties at hazardous concentrations, so odor breakthrough is not a reliable end-of-service signal. This is exactly why OSHA requires a calculated change-out schedule. Read the respirator cartridge esli guide before relying on any sensory cue.

Does the 7582P100L have an end-of-service-life indicator (ESLI)?

Most acid gas cartridges in this class do not carry a NIOSH ESLI for the full gas list, so you should plan on a time-based change-out rather than a visual indicator. If an ESLI is a hard requirement for your program, verify the specific NIOSH approval label and consider how the broader respiratory-protection program documents change-out, covered in our respiratory protection complete guide.

Will the 7582P100L work on a 3M or Moldex facepiece?

No. The 7582P100L uses the Honeywell North bayonet mount, which is brand-specific and not cross-compatible with 3M or Moldex bayonet systems. Cartridge mounts are intentionally keyed to one brand's facepieces, so you must match North cartridges to North masks. If you run a mixed fleet, see the alternatives in our moldex respirator cartridges and filters collection for the Moldex side.

How does this cartridge fit into a complete respiratory protection program?

The cartridge is only one layer — you also need a fit-tested facepiece, a hazard assessment, a written change-out schedule and a medical clearance per OSHA 1910.134. Browse the full set of compatible masks and cartridges in our respiratory protection collection, and use the respiratory protection complete guide to make sure the 7582P100L is the right node in your overall program rather than a standalone fix.

Is the 7582P100L a better choice than a multi-gas combination cartridge for my site?

A dedicated acid gas cartridge like the 7582P100L gives full rated capacity against the acid gases it covers, whereas multi-gas cartridges spread sorbent across several gas families and can have shorter service life per hazard. If acid gas is clearly your primary exposure, the 7582P100L is the more capacity-efficient pick; if you face several unrelated gas families, compare it against the broader North options such as the honeywell north 7584p100l review before deciding.

How does the 7582P100L compare to a full-facepiece-rated cartridge setup?

The cartridge itself does not change your protection factor — that comes from the facepiece class and a passing fit test. The same 7582P100L can serve a half-mask or a full-face North respirator; a full facepiece simply earns a higher assigned protection factor and adds eye protection against acid mists. For the integrated front-mount comparison, see the honeywell north 75ffp100 review.

Should I size my purchase by the pair or by the case?

The L suffix means the 7582P100L ships as a matched pair, and you should always replace both cartridges together so they share one change-out clock. For facilities with several users, buying by the case keeps replacement cartridges on hand so no one is tempted to stretch a spent cartridge past its scheduled change-out. Match quantity to your headcount and your documented change-out interval, not to convenience.

If my hazard might change, is the 7582P100L a future-proof choice?

Not especially — its coverage is deliberately narrow to acid gas plus particulate. If your processes are likely to introduce solvents or organic vapors later, standardizing on the broader 7583P100L OV+AG+P100 now avoids re-qualifying a new cartridge and re-stocking inventory. Reserve the 7582P100L for stable, well-characterized acid-gas-only operations, and re-check the fit against the honeywell north 75852p100l review or the honeywell north 75scp100l review if your hazard profile shifts.

Why trust WC Safety
Industrial PPE specialists. We do not accept manufacturer payment for placement.
Reviewed by
Steven Eaton, WC Safety Editorial — guidance reflects current OSHA, NIOSH and ANSI practice.
Our standards
Ratings combine published specs, hands-on familiarity, and verified customer data where available; we do not fabricate lab tests.
Affiliate disclosure
Some links are Amazon affiliate links (tag wcsafety04-20); purchases may earn us a commission at no cost to you.
Filed in: 7582P100L, acid gas, chlorine, HCl, honeywell north, NIOSH, P100, product review, respirator cartridges, SO2
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