Honeywell North 7581P100L Organic Vapor / P100 Respirator Cartridge (Pair) — NIOSH Approved

Honeywell North 7581P100L — OV + P100 Combination Cartridge, NIOSH 42 CFR 84, Pair

The Honeywell North 7581P100L is a NIOSH 42 CFR 84 organic vapor + P100 combination cartridge providing simultaneous protection against organic vapor solvents and 99.97% P100 particle filtration in a single cartridge — sold as a pair on the North bayonet system. The 7581P100L is the correct choice when both organic vapor and particulate hazards are documented, most commonly in spray painting, coating operations, and solvent-based industrial processes. For environments that also involve acid gas (HCl, HF, SO₂), the 7583P100L (OV+AG+P100) provides broader protection — often at a lower cost. For ammonia or multi-contaminant environments, see the 75SCP100L. Fits all Honeywell North 7700, 5500, 5400, and 7600 series facepieces.

Key Features

• Dual-protection OV + P100: Combines an activated carbon OV sorbent layer with a P100 particle filter in a single cartridge — protecting against both spray mist and solvent vapor simultaneously without requiring separate filter/cartridge combinations
• NIOSH-approved combination: OV + P100 NIOSH approval covers the broadest range of spray painting and solvent operation hazards — solvent vapors (toluene, xylene, MEK, acetone) plus particulate overspray, pigment, and isocyanates in a single approved cartridge
• Sold as a pair: Two cartridges per package, covering both positions on a standard North half-mask or full-face respirator
• North bayonet compatibility: Fits all North 7700, 5500, 5400, and 7600 series respirators — same connector as all other North cartridges
• Upgrade path to broader coverage: If acid gas or ammonia co-exposure is identified after initial hazard assessment, the 7583P100L and 75SCP100L use the same connector with no facepiece change required

Applications — When to Use the 7581P100L

The 7581P100L is the standard cartridge for spray painting and solvent operations where both organic vapor and airborne particles are present:

• Automotive refinishing and spray painting: OSHA 1910.94 and NFPA 33 spray finishing operations — OV covers solvent vapors from lacquers, urethanes, and clears; P100 covers spray mist and particulate overspray
• Industrial coating operations: Epoxy coatings, polyurethane topcoats, and industrial paint systems that generate both solvent vapor and aerosol during application
• Adhesive application: Solvent-based adhesives, contact cement, and bonding agents used in flooring, roofing, and manufacturing
• Fiberglass and resin work: Styrene, epoxy resin vapors, and glass fiber particulate — OV covers styrene, P100 covers fiberglass dust
• General solvent operations with dust co-exposure: Any documented OV hazard where the work process also generates airborne particles confirmed by industrial hygiene assessment

Note on isocyanates: For 2K isocyanate-based paints (MDI, HDI, TDI), OSHA recommends supplied-air respirators for spray application. The 7581P100L OV cartridge does not have a specific NIOSH isocyanate approval — consult your SDS and industrial hygienist if working with isocyanate coatings.

Compatible Respirators

All Honeywell North 7-series and N-series cartridges use the North bayonet twist-lock connector, compatible with the following facepieces. Cartridge selection does not affect fit testing — OSHA 1910.134(f)(2) requires annual fit testing for any tight-fitting respirator.

North Cartridge & Filter Line — Full Comparison

All Honeywell North cartridges use the same North bayonet connector. Select based on documented hazard class — cartridge type does not change the facepiece.

Browse the complete cartridge lineup at Honeywell North Respirator Cartridges & Filters →

OSHA Compliance

• NIOSH approval required: All cartridges used in OSHA-mandated respiratory protection programs must be NIOSH approved under 42 CFR Part 84 — Honeywell North cartridges carry NIOSH approval for the hazard classes listed on the cartridge label
• Cartridge selection via hazard assessment: OSHA 1910.134(d)(1) requires selecting a respirator and filter/cartridge based on a workplace hazard assessment — cartridge type must be confirmed by a Certified Industrial Hygienist or equivalent documentation
• Fit testing required: OSHA 1910.134(f)(2) mandates annual fit testing for any tight-fitting facepiece — changing cartridges does not reset the fit test requirement
• Change schedules required: OSHA 1910.134(d)(3)(iii) requires an established cartridge change schedule for gas/vapor cartridges — end-of-service-life must be determined before use, not when breakthrough is detected by smell
• Medical evaluation prerequisite: OSHA 1910.134(e) requires medical clearance before fit testing or operational respirator use — this applies regardless of cartridge type selected

Frequently Asked Questions

What does the 7581P100L protect against?

Organic vapors (solvents including toluene, xylene, MEK, acetone, benzene, and related compounds) plus P100 particle filtration (99.97% efficiency for all aerosol types). Does not protect against acid gases (HCl, HF, SO₂, Cl₂), ammonia, or carbon monoxide. If acid gases are present, use the 7583P100L instead.

When should I use the 7581P100L vs. the 7583P100L?

Use the 7581P100L when industrial hygiene documentation confirms organic vapors and particles only — no acid gas. Use the 7583P100L (OV+AG+P100) when acid gases may also be present. The 7583P100L typically costs the same or less and covers more hazard classes — making it the preferred default for mixed or uncertain environments.

Which respirators does the 7581P100L fit?

All Honeywell North bayonet facepieces: North 770030 series (S/M/L half-masks), North 550030 series (S/M/L half-masks), North 54001 and 54001S, North 760008A and 760008AS full-face units.

Is the 7581P100L appropriate for spray painting?

Yes for most conventional coating operations (lacquers, enamels, urethanes, solvent-based paints). For two-component isocyanate paints (MDI, TDI, HDI-based), supplied-air respirators are recommended during spray application. Confirm with your SDS and a qualified industrial hygienist for isocyanate products.

How long does an OV+P100 combination cartridge last?

P100 filter life is determined by physical loading — replace when resistance increases or filter is visibly contaminated. OV sorbent life depends on concentration, humidity, and temperature. OSHA 1910.134(d)(3)(iii) requires an established change schedule before use — do not rely on odor breakthrough as a warning. Your industrial hygienist should set a change frequency based on air monitoring data.

Does the 7581P100L require fit testing?

Yes — fit testing is required for the facepiece, not the cartridge. OSHA 1910.134(f)(2) mandates annual qualitative or quantitative fit testing. Switching cartridge models does not require a new fit test.

What is the APF of the 7581P100L on a half-mask?

APF 10 per OSHA 1910.134 Appendix A — meaning it can be used in environments up to 10× the OEL for covered OV compounds. For environments exceeding 10× OEL, a full-face respirator (North 54001 or 760008A) with the same cartridge provides APF 50.

Can the 7581P100L be used for welding fume?

The P100 component covers metal fume particulate. If the welding process also generates organic vapor co-exposure (e.g., from coatings on the workpiece), the OV component addresses that. For stainless steel or coated metal welding that produces Cr VI, confirm with an industrial hygienist whether a combination cartridge and engineering controls are jointly required.

What is the difference between 7581P100L and 75SCP100L?

The 7581P100L covers OV + P100. The 75SCP100L covers OV + Acid Gas + Ammonia + P100 — the broadest North combination cartridge. Use 75SCP100L when your hazard profile includes multiple gas classes or when the profile is not fully characterized.

Where can I find all North cartridges?

Browse the complete lineup at Honeywell North Respirator Cartridges & Filters →