Honeywell North N75002L vs 7582P100L: Acid Gas vs Acid Gas/P100 — When Do You Need Particulate Protection? (2026)
By Steven Eaton — WC Safety Editorial | Published June 10, 2026
Affiliate Disclosure: WC Safety participates in the Amazon Associates Program. Links marked as Amazon links are affiliate links — we earn a small commission at no extra cost to you. This never influences our product recommendations.
Quick Answer
Both cartridges fit the same Honeywell North bayonet platform and protect against acid gases including Cl2, HCl, SO2, HF, HCN, and H2S. The N75002L is acid gas only. The 7582P100L adds P100 particulate filtration (99.97%) and organic vapor coverage on top of the same acid gas protection.
Choose N75002L only when your IH assessment confirms a pure gas-phase acid gas environment — no spray, no mist, no aerosol, no organic vapor co-exposure. Choose 7582P100L when any spray, mist, aerosol, or OV co-exposure exists. In most real-world acid gas environments, the 7582P100L is the more defensible choice.
At-a-Glance: N75002L vs 7582P100L
| Specification | N75002L | 7582P100L |
|---|---|---|
| Protection Type | Acid Gas only | OV / Acid Gas / P100 |
| Acid Gases Covered | Cl2, HCl, SO2, HF, HCN, H2S | Cl2, HCl, SO2, HF, HCN, H2S |
| Organic Vapor | No | Yes |
| Particulate Filter | None | P100 — 99.97% efficiency |
| Oil Aerosol Rated | No | Yes (P-series = oil-proof) |
| Mount Type | North Bayonet | North Bayonet |
| Compatible Facepieces | 7700, 5500, 5400, 7600 | 7700, 5500, 5400, 7600 |
| Breathing Resistance | Lower | Slightly higher (P100 layer) |
| Use Case | Pure gas-phase acid gas only | Acid gas + any spray/mist/OV |
| Cost | Lower | Higher (~20–30% premium) |
Product Profiles
Honeywell North N75002L — Acid Gas Cartridge
The N75002L is Honeywell North's dedicated acid gas cartridge. It uses activated carbon sorbent formulated specifically for acid gas molecules: chlorine, hydrogen chloride, sulfur dioxide, hydrogen fluoride, hydrogen cyanide, and hydrogen sulfide. There is no mechanical particulate filter and no organic vapor sorbent.
This cartridge's narrow scope is also its main advantage in the right environment. When you are working in a confirmed, metered gas-phase acid gas exposure with no aerosol generation and no organic vapor co-contaminant, the N75002L provides targeted protection with lower breathing resistance and a lower per-unit cost compared to combination cartridges.
The N75002L is widely used in water treatment facilities for chlorine gas monitoring, chemical plant gas-phase inspection tasks, and laboratory environments where acid gas exposure has been characterized and aerosol generation ruled out.
Honeywell North 7582P100L — OV/Acid Gas/P100 Combination Cartridge
The 7582P100L is a full-spectrum combination cartridge: organic vapor sorbent, acid gas sorbent, and a P100 mechanical particulate filter — all in one cartridge. It uses the same North bayonet mount and fits the same facepieces as the N75002L, so upgrading from N75002L to 7582P100L requires only a cartridge swap. No new facepiece, no new hardware.
The P100 filter layer captures 99.97% of aerosol particles — both oil-based and non-oil-based. The "P" designation (oil-proof) is critical in environments where oil mists or acid mists are present. The organic vapor layer handles solvent vapors and other VOCs that may be co-contaminants in complex chemical environments.
The 7582P100L is the standard choice for pool chemical handling, acid cleaning operations, chemical plant maintenance, lab work involving both acids and solvents, and any acid gas task where the hazard assessment is incomplete or where aerosol risk cannot be ruled out.
Key Differences: What the P100 Layer Actually Changes
Protection Scope
This is the fundamental difference. The N75002L protects only against gas-phase acid gas molecules. It provides no protection against aerosol particles — acid mists, spray droplets, dust — and no organic vapor coverage. If your environment involves any aerosol generation or solvent co-exposure, the N75002L leaves a documented gap in your respiratory protection program.
The 7582P100L eliminates that gap. Its P100 layer captures particulates before they reach the sorbent bed, and the OV layer addresses any organic vapor co-contaminants. You get acid gas protection identical to the N75002L, plus two additional protection layers.
Breathing Resistance
The P100 filter adds a small amount of breathing resistance compared to the gas-only N75002L. In practice, most workers do not notice a meaningful difference during standard industrial tasks. The distinction matters more for physically demanding work at high exertion levels where breathing resistance can cause fatigue. For most acid gas tasks — inspection, monitoring, chemical handling — the difference is minor.
Cost
The N75002L carries a lower purchase price per cartridge. The 7582P100L typically runs 20–30% higher due to the added filter media. For facilities running large cartridge volumes, this price delta is real. However, if the IH assessment does not clearly exclude aerosol risk, using the N75002L to save cost creates a compliance gap that outweighs any savings.
Cartridge Service Life
For acid gas sorbent, service life is governed by the same factors in both cartridges: airborne concentration, humidity (moisture reduces acid gas service life), temperature, and work rate. The P100 filter layer in the 7582P100L does not reduce acid gas service life. The P100 filter itself has a separate end-of-service indicator — it loads with particles and airflow resistance increases when it needs replacement.
Organic Vapor Coverage
The N75002L provides zero organic vapor protection. In mixed chemical environments — for example, an acid cleaning operation that also involves solvent-based degreasers — the 7582P100L is the only choice of the two. Acid gas cartridges are not interchangeable with OV cartridges. They use different sorbent materials designed for different chemical families.
Which Cartridge Should You Buy?
Choose N75002L When:
- Industrial hygiene assessment confirms pure gas-phase acid gas exposure only
- No aerosol, mist, spray, or splash risk is present or possible in the task
- No organic vapor co-contaminants identified in the exposure assessment
- Specific examples: metered gas-phase chlorine monitoring at water treatment; controlled acid gas sampling in a closed system; laboratory analysis tasks with fully characterized gas-only exposure
- Breathing resistance is a documented concern for the specific task and worker
Choose 7582P100L When:
- Acid gas exposure involves any spray, mist, aerosol, or splash risk — even potential risk
- Pool chemical handling, acid cleaning, or acid splash risk is present
- Organic vapors are co-contaminants (solvents, VOCs alongside acid gases)
- The exposure assessment is incomplete or the task involves variable or poorly characterized hazards
- You are simplifying your cartridge inventory and want one SKU to cover multiple acid gas scenarios
- OSHA inspection risk or audit readiness is a concern — the 7582P100L is the more defensible cartridge in any ambiguous environment
The Real-World Default: Most Acid Gas Environments Warrant the 7582P100L
In practice, genuinely pure gas-phase acid gas environments are relatively rare. Water treatment chlorine handling, one of the most common acid gas applications, often involves valve operations, chemical transfer, and other tasks that can generate aerosol or splash. Pool chemical handling almost always involves some aerosol or liquid contact risk. Acid cleaning is by definition a wet process.
If there is any uncertainty about whether the environment is truly aerosol-free, select the 7582P100L. The cost premium is modest. The protection gap from an incorrect N75002L selection can be significant. For safety program administrators managing a workforce across varying tasks, a single 7582P100L SKU often simplifies inventory and removes the risk of workers selecting the wrong cartridge for a given task.
Facepiece Compatibility
Both cartridges use the Honeywell North bayonet mount — the same physical interface. They are compatible with the following Honeywell North facepieces:
- Half-mask — Honeywell North 7700 Series (7700-30, 7700-S, 7700-M, 7700-L): Classic elastomeric half-mask, APF=10
- Half-mask — Honeywell North 5500 Series: Silicone half-mask, same bayonet, APF=10
- Full-face — Honeywell North 5400 Series: Classic elastomeric full-face, APF=50
- Full-face — Honeywell North 7600 Series: Premium silicone full-face, APF=50
These cartridges are not compatible with 3M, MSA, or other manufacturer facepieces. The North bayonet interface is proprietary. Never mix cartridge and facepiece brands.
Note on Full-Face Selection: If your acid gas exposure requires APF=50 (concentration levels above the half-mask limit), move to the 5400 or 7600 full-face — but these cartridges remain the correct choice either way. The cartridge selection decision (N75002L vs 7582P100L) is independent of the facepiece selection decision.
Related Guides
Frequently Asked Questions
What is the difference between the Honeywell North N75002L and 7582P100L?
The N75002L protects against acid gases only (Cl2, HCl, SO2, HF, HCN, H2S). The 7582P100L adds P100 particulate filtration (99.97% efficiency) and organic vapor protection on top of the same acid gas coverage. Both use the identical North bayonet mount and fit the same facepieces.
Do the N75002L and 7582P100L fit the same Honeywell North respirators?
Yes. Both cartridges use the North bayonet mount and are compatible with the Honeywell North 7700 series half-mask, 5500 series half-mask, 5400 series full-face, and 7600 series full-face respirators.
When should I choose the N75002L over the 7582P100L?
Choose the N75002L only when your industrial hygiene assessment confirms a pure acid gas environment with no spray, mist, aerosol, or organic vapor co-exposure. Examples: controlled gas-phase handling of metered acid gas in a closed system, or water treatment operations with no spray or splash risk.
Why do most acid gas environments require the 7582P100L?
Most real-world acid gas environments involve some form of aerosol, mist, or spray alongside the gas phase — acid splash, pool chemical dispersion, cleaning solution aerosols. The P100 filter in the 7582P100L captures these particulate hazards. Using the N75002L in a mist environment leaves a gap in protection.
Can I use the 7582P100L in a pure acid gas environment?
Yes. The 7582P100L is a superset of the N75002L. Its P100 layer adds filtration without degrading acid gas protection. The primary tradeoffs are slightly higher breathing resistance and a higher purchase price.
What does P100 mean on the 7582P100L?
P100 is NIOSH's highest particulate filtration rating — 99.97% minimum efficiency against oil-based and non-oil-based aerosols. The "P" designation means oil-proof, suitable for environments with oil mists in addition to water-based aerosols.
Is the 7582P100L also an OV cartridge?
Yes. The 7582P100L provides organic vapor (OV), acid gas (AG), and P100 protection combined. The N75002L provides acid gas protection only — no organic vapor coverage.
What acid gases does the N75002L protect against?
The N75002L is rated for chlorine (Cl2), hydrogen chloride (HCl), sulfur dioxide (SO2), hydrogen fluoride (HF), hydrogen cyanide (HCN), and hydrogen sulfide (H2S).
Will adding a P100 filter reduce the service life of the acid gas sorbent?
No. The P100 layer is a mechanical filter that captures particles; it does not interact with the acid gas sorbent bed. Acid gas service life is determined by concentration, humidity, and work rate — not by the presence of a P100 filter.
Can I use these cartridges for chlorine gas at a water treatment plant?
Both cartridges protect against chlorine gas. For routine monitoring tasks with no spray or mist, the N75002L may suffice. For tasks involving chemical transfer, valve operations, splash risk, or any spray generation, use the 7582P100L to cover both gas and aerosol exposures.
Do I need a full-face respirator to use these cartridges?
Not necessarily. Both cartridges fit Honeywell North half-masks (7700 and 5500 series) as well as full-face respirators (5400 and 7600 series). A full-face is required when eye protection against acid gas splash or vapor is also needed, or when the concentration level requires APF=50.
How do I know when to change these cartridges?
Cartridge change schedules must be established through an OSHA-compliant change schedule or an end-of-service-life indicator (ESLI). OSHA 29 CFR 1910.134 prohibits relying on odor alone for cartridge change decisions. Consult your industrial hygienist for a site-specific schedule based on exposure concentration and task duration.
Are these cartridges compatible with other brands of respirators?
No. Both the N75002L and 7582P100L use the Honeywell North proprietary bayonet mount. They are not compatible with 3M, MSA, or other manufacturer facepieces. Cross-brand cartridge and facepiece mixing is prohibited and voids NIOSH approval.
Is there a P100-only version for the North platform?
Yes — the Honeywell North 7580P100 is a P100 particulate-only cartridge on the same North bayonet platform. It provides no gas or vapor protection — for particulate-only environments such as dust, mist, or fume without chemical gas co-exposure.
Where can I buy Honeywell North N75002L and 7582P100L cartridges?
WC Safety stocks both cartridges. Order N75002L at WC Safety or order 7582P100L at WC Safety. Both are also available on Amazon (N75002L) and Amazon (7582P100L).
Written by Steven Eaton — Safety Equipment Specialist, WC Safety Editorial
WC Safety is an industrial PPE retailer specializing in respiratory protection, fall protection, and hearing conservation equipment. Content is reviewed for technical accuracy against NIOSH approval databases and OSHA 29 CFR 1910.134. Specifications are sourced from manufacturer documentation — no specs are fabricated or estimated.
NIOSH approval status and product specifications are subject to change. Verify current approvals on the NIOSH NPPTL website before deployment. This content does not constitute a respiratory protection program or substitute for site-specific industrial hygiene evaluation.