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Industrial Safety Equipment, PPE Guides & Reviews
Industrial Safety Equipment, PPE Guides & Reviews
Honeywell North N75002L Acid Gas Cartridge — North Bayonet Respirator Cartridge product photo
May 12, 2026 Steven Eaton

Honeywell North N75002L Review

WC Safety Editorial Verdict: 4.4/5

WC Safety Editorial Verdict: 4.4/5. The Honeywell North N75002L is the correct acid gas, gas-only cartridge for documented chemical environments — semiconductor cleanrooms, analytical labs, and enclosed gas-phase processes — where acid gases such as HCl, HF, SO₂ and Cl₂ are present but organic vapors and airborne particles are definitively absent, trading the P100 filter for noticeably lower breathing resistance and weight. It is a Honeywell North bayonet cartridge and will not fit 3M facepieces, so confirm your platform and pair it with the right facepiece APF using our how to choose a respirator cartridge guide. The half-point deduction reflects the unforgiving rule that any particle uncertainty should push you to the combination honeywell north 7582p100l instead.

When Should You Choose the Honeywell North N75002L Acid Gas Gas-Only Cartridge?

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The Honeywell North N75002L is a NIOSH-approved acid gas cartridge with no particulate filter — the right choice for semiconductor cleanrooms, chemical laboratories, and other controlled environments where acid gases are present but organic vapors and airborne particles are definitively absent. Lower breathing resistance than combination P100 cartridges; the same acid gas coverage as the 7582P100L without the filter layer.

Editorial Verdict — N75002L: 4.4/5
Correct for documented acid gas environments with no particulate and no organic vapor hazard. Lower breathing resistance than 7582P100L. If any particle uncertainty exists, use 7582P100L instead.

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Specifications

Feature Details
Model N75002L
OV Protection No — acid gas sorbent only. For organic vapor use the N75003L (gas-only) or 7583P100L (with P100)
Acid Gas Protection Yes — HCl, HF, SO₂, Cl₂, HCHO
Particle Protection None (gas-only)
NIOSH Approval Yes — 42 CFR Part 84

Primary Applications

  • Semiconductor fabrication cleanrooms — HF and HCl present; no organic solvents, no particles
  • Analytical chemistry laboratories — acid gas work in controlled environments
  • Pharmaceutical synthesis — acid gas exposure from acid catalyst work, without particle generation
  • Chemical plant gas-phase processes — enclosed systems with acid-gas-only exposure

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 does the N75002L protect against?

A: Acid gases (HCl, HF, SO₂, Cl₂, HCHO) via an acid gas sorbent. No organic vapor protection and no particulate protection — it is a gas-only acid gas cartridge.

Q: How does N75002L differ from 7582P100L?

A: Same acid gas coverage, but the N75002L has no P100 filter. Lower breathing resistance and weight; not appropriate when particles are present. The 7582P100L adds P100 and costs slightly more. Neither cartridge covers organic vapor — that requires the N75003L (gas-only) or 7583P100L (with P100).

Q: Is N75002L appropriate for semiconductor cleanrooms?

A: Yes — cleanroom environments typically have no significant particle hazard, making gas-only cartridges appropriate. N75002L covers the HF and HCl hazards common in semiconductor processing; if organic solvents are also present, step up to an organic vapor cartridge such as the N75003L.

Q: What is the OSHA PEL for HF?

A: OSHA PEL for hydrogen fluoride is 3 ppm TWA. HF is extremely corrosive and hazardous — verify that concentrations remain within APF 10 limits (half-face: up to 30 ppm) or use a full-face for APF 50 (up to 150 ppm).

Q: Does N75002L include ammonia protection?

A: No — the N75002L carries no ammonia sorbent. For ammonia and methylamine, use the 7584P100L (ammonia + methylamine + P100).

Q: How do I replace N75002L cartridges?

A: Replace on any vapor/odor detection or per written change schedule. OSHA requires documented change schedules for cartridges with no end-of-service-life indicator (ESLI).

Q: What respirators are compatible with N75002L?

A: Honeywell North bayonet respirators: 5500 half-face, 7600 full-face, 5400 full-face. Not compatible with 3M.

Q: Is N75002L NIOSH-approved?

A: Yes — 42 CFR Part 84, as an acid gas cartridge.

Q: Where can I buy the N75002L?

A: At WC Safety. See all North cartridges.

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
  • Leave the area, then replace if the wearer detects any odor, taste, or irritation through the cartridge — leave the contaminated area immediately and investigate the cause before returning — breakthrough, a poor face seal and a failed component all present the same way. Warning properties are not a permitted basis for the change schedule under OSHA 29 CFR 1910.134(d)(3)(iii)(B)
  • 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.

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.

Semiconductor and Cleanroom Applications: Why Gas-Only Cartridges Excel

Semiconductor fabrication cleanrooms present a unique respiratory protection challenge: extremely hazardous chemicals (HF, HCl, arsine, phosphine, exotic organics) at carefully controlled concentrations, but essentially zero particulate hazard because the cleanroom environment itself maintains Class 100-10000 cleanliness. In this context, gas-only cartridges like the N75002L offer real advantages:

  • Lower breathing resistance: the P100 filter layer in combination cartridges adds significant breathing resistance; in a cleanroom with controlled particle environment, the filter is wasted protection that increases discomfort
  • Lower weight and profile: gas-only cartridges are lighter, reducing neck fatigue during long workdays in full-face respirators
  • Appropriate protection scope: the N75002L covers acid gases — the dominant gas hazard class in most semiconductor wet processing environments; if organic solvents are also in use, an organic vapor cartridge is required instead
  • Cost efficiency: lower cost than combination P100 cartridges for applications where the P100 is not needed

Always confirm with your cleanroom facilities and safety team that particle concentrations remain below threshold — if any construction, maintenance, or non-standard operations may generate particles, upgrade to the acid gas + P100 combination, the 7582P100L.

Key Acid Gas Hazards in Chemical Laboratory Environments

Analytical and synthetic chemistry laboratories commonly encounter the acid gases covered by the N75002L:

  • HF (Hydrofluoric acid / hydrogen fluoride gas): used in glass etching, fluorine chemistry, silicon processing. OSHA PEL 3 ppm. ACGIH TLV 0.5 ppm ceiling — one of the most toxic gases by APF relative to TLV. Full-face recommended for any significant HF work.
  • HCl: generated during acid chlorinations, hydrolysis reactions, and from fuming HCl solutions. OSHA PEL 5 ppm ceiling
  • HCHO (Formaldehyde): used as a preservative, fixative, and in numerous synthetic pathways. OSHA 1910.1048 Formaldehyde Standard applies — air monitoring, written program, medical surveillance
  • SO₂: present in certain oxidation reactions and combustion processes. OSHA PEL 5 ppm TWA

Selecting the Right Honeywell North Respirator for Your Cartridge

North bayonet cartridges work with three respirator product lines. Selecting the correct respirator determines your protection level:

  • North 5500 Series half-face: APF 10; available in S, M, L sizes; silicone facepiece; recommended for most industrial environments with exposures ≤10× PEL
  • North 7600 Series full-face: APF 50; panoramic lens; appropriate for IDLH environments below IDLH concentration when combined with correct cartridges; also provides eye protection
  • North 5400 Series full-face: APF 50; traditional lens design; often used in specialty industrial applications requiring specific optical characteristics

For all respirator-cartridge combinations, the facepiece must be NIOSH-approved as part of an approved assembly. Verify compatibility in the NIOSH NPPTL Certified Equipment List (CEL) before deploying a new combination in your respiratory protection program.

Additional Frequently Asked Questions

Q: What is the NIOSH acid gas approval for the N75002L?

A: NIOSH approves the N75002L under 42 CFR Part 84 as an acid gas cartridge. The TC approval number appears on the cartridge body and packaging. Reference the NIOSH NPPTL Certified Equipment List (CEL) for current approval details.

Q: Is the N75002L appropriate for use with hydrofluoric acid etching?

A: HF etching is a high-hazard application. The N75002L covers HF vapor, but the severity of HF toxicity (skin penetration, systemic calcium depletion, cardiac toxicity) means engineering controls must be primary. A full-face respirator (not half-face) is strongly recommended for significant HF work to protect the eyes from HF splash. Verify APF limits relative to your measured HF air concentrations.

Q: Does the N75002L cover organic acids like acetic acid or formic acid?

A: Acetic acid (AcOH) and formic acid (HCOOH) are organic acids — the cartridge coverage depends on the NIOSH approval. The N75002L has no organic vapor sorbent, so do not assume it captures them; verify the NIOSH TC approval language or consult your IH. If uncertain, move to the 7583P100L, which provides organic vapor plus acid gas coverage.

Q: Can N75002L be used in a pharmaceutical synthesis lab?

A: Pharmaceutical synthesis involves diverse chemistry. The N75002L covers acid gases only — appropriate when the specific reagents in use fall within that category. Always perform a chemical inventory review against the NIOSH approval for each batch or process. Pharmaceutical labs often use the 7583P100L for broader coverage when chemistries vary.

Q: What should I do if my lab has both acid gas and ammonia hazards?

A: The N75002L covers acid gases but not ammonia, and no North bayonet acid gas cartridge covers both. If ammonia is also present (from ammonium hydroxide, amine reactions, or ammonia cleaning agents), use the ammonia/methylamine cartridge 7584P100L for the ammonia hazard, or the multi-contaminant 75SCP100L if particles may also be present.

Q: How does breathing resistance compare between N75002L and 7583P100L?

A: The N75002L (gas-only) has significantly lower breathing resistance than the 7583P100L (OV+AG+P100) because the P100 filter layer is a major contributor to flow resistance. In environments where workers experience breathing fatigue or heat stress that reduces compliance with respirator use, switching to gas-only cartridges (when appropriate) can significantly improve comfort and compliance.

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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
  • Gas-only acid gas design delivers lower breathing resistance and weight than equivalent P100 combination cartridges, easing fatigue during long full-face shifts
  • Covers the acid gas hazards common in semiconductor wet processing and analytical chemistry (HCl, HF, SO2, formaldehyde)
  • NIOSH-approved under 42 CFR Part 84, with the TC number printed on the cartridge body for assembly verification
  • Mounts on the full Honeywell North bayonet line (5500 half-face, 7600 and 5400 full-face), so one cartridge spans your half- and full-face fleet
  • Typically lower cost than combination P100 cartridges, avoiding paying for filtration you do not need in a controlled-particle environment
Cons
  • No particulate filtration whatsoever — a single particle-generating task (grinding, maintenance, powder handling) puts it out of scope
  • Honeywell North bayonet mount is not cross-compatible with 3M or Moldex facepieces, limiting it to North users
  • Does not cover organic vapor, ammonia or methylamine, so solvent, amine and ammonium-hydroxide work requires a different cartridge (N75003L for organic vapor, 7584P100L for ammonia)
  • Has no end-of-service-life indicator (ESLI), so it relies entirely on a written, objective-data change schedule
  • Reusability and value depend on disciplined storage and change-out; sorbent that has partially adsorbed acid gas can desorb if stored and reused improperly

Who It's For

Buy it if:

  • Semiconductor fab and cleanroom techs exposed to HF and HCl in a Class 100-10000 particle-controlled environment
  • Analytical and synthetic chemists in labs already running North 5500 half-face or 7600/5400 full-face respirators
  • Safety managers who have measured air concentrations and confirmed zero particulate hazard, and want lower breathing resistance for compliance
  • Facilities standardizing a Honeywell North bayonet program who need an acid gas option without the P100 layer

Look elsewhere if:

  • Anyone whose task generates dust, mist, fume, or powder — they need a P100 combination cartridge such as the 7582P100L
  • 3M or Moldex respirator users, since the North bayonet will not seat on those facepieces
  • Workers facing organic solvents, ammonia, methylamine, or unidentified/variable chemistries that fall outside acid gas coverage

Common questions

Sources. Requirements referenced here come from OSHA 29 CFR 1910 and the NIOSH recommendations. Where a consensus standard governs, the ANSI document is named in the text.

Related reference

Related on this site: honeywell north n75002l vs 7582p100l: acid gas vs acid gas/p100 — when, honeywell north 7583p100l vs 3m 60923: organic vapor, acid gas & p100, honeywell north n75001l vs n75002l: organic vapor vs acid gas, how to choose a respirator cartridge: complete selection guide, honeywell north 7580p100 vs 75scp100l: p100 filter vs multi-gas, and honeywell north 7583p100l vs 75scp100l: which cartridge should you.

Why trust WC Safety

WC Safety is an independent, affiliate-supported review site. It is not a retailer: it holds no inventory, takes no orders, and earns only from qualifying purchases through clearly marked links — which never changes what a product is rated to do. Standards language is taken from the regulation text directly, and ratings are reported as the manufacturer publishes them. We run no laboratory and perform no testing of our own. Where published sources disagree, we say so and plan on the conservative figure rather than the flattering one.

Our methodology

Figures come from the regulation and the published specification, in that order. Derated numbers are calculated, not estimated. Nothing here is presented as a measured result, because we measure nothing.

Researched and written by Steven Eaton, editor of WC Safety. Steven holds no safety certification and does not test products; this page compares what manufacturers and regulators publish, with the gaps in that record marked. Last reviewed August 2026.

Affiliate disclosure: as an Amazon Associate, WC Safety earns from qualifying purchases. WC Safety is not a retailer and takes no orders — links go to the seller, and the price you pay is unchanged.

Verify the gas list on the approval label. The authoritative list of gases a cartridge is approved for — and whether any are approved for escape only rather than for sustained work — is printed on the cartridge's NIOSH approval (TC) label. Confirm it against your hazard assessment before use.

Filed in: acid gas, gas-only, HCl, HF, honeywell north, N75002L, NIOSH, organic vapor, product review, respirator cartridges
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