Best Honeywell North Cartridge For Chlorine

Best Honeywell North Cartridge for Chlorine

Reviewed by WC Safety Editorial — Last updated: June 2026.

Quick Answer

Chlorine is an acid gas, so the Honeywell North answer is an acid-gas or multi-contaminant cartridge, never a P100 filter or an organic-vapor cartridge. And because chlorine is acutely toxic, the concentration limit matters as much as the cartridge.

For most chlorine work choose the 7582P100L (acid gas + P100); for pure chlorine gas the focused N75002L is enough. The non-negotiable rule: a cartridge is valid only below the 10 ppm chlorine IDLH. Full brand-neutral detail is in our best respirator cartridge for chlorine guide.

Understanding the Hazard: Chlorine Gas (Cl₂)

Chlorine is a greenish-yellow, pungent gas and a powerful oxidizer. For cartridge selection it is an acid gas, captured by acid-gas sorbent, which is why ordinary organic-vapor cartridges and P100 filters fail against it.

How exposure occurs. Chlorine gas is used to disinfect drinking water and wastewater, supplied from 150-pound cylinders or one-ton containers feeding a chlorinator. Pool operators handle chlorine-releasing chemicals that off-gas when wet or mixed. Chemical plants use chlorine as a feedstock. Leaks at cylinders, valves, and fittings are the defining exposure event.

Short-term risks. Low concentrations sting the eyes, nose, and throat; higher levels cause coughing, chest tightness, and airway burns; and high concentrations cause pulmonary edema and can be rapidly fatal. Long-term risks. Repeated exposure contributes to chronic bronchitis and reactive airway disease.

Why respiratory protection matters. Chlorine odor warns at low levels, but a leak escalates faster than a cartridge can safely handle. The numbers frame the program: OSHA PEL 1 ppm ceiling, NIOSH REL 0.5 ppm ceiling, IDLH 10 ppm. Common environments: water and wastewater plants, pool and aquatic facilities, and chlorine-using chemical manufacturing.

Which Honeywell North Cartridge Is Best for Chlorine?

Primary recommendation: the 7582P100L (acid gas + P100). For most chlorine work, including water treatment where mists are common, this is the right North cartridge — acid-gas sorbent for the chlorine plus a P100 filter for particulate.

Focused / budget: the N75002L (acid gas). When chlorine gas is the only hazard and no particulate is present, the dedicated acid-gas cartridge is the lighter, lower-cost correct choice.

Broad / water treatment: the 75SCP100L (multi-contaminant + P100). For plants facing chlorine plus chlorine dioxide, sulfur dioxide, and other gases, the multi-contaminant cartridge covers the whole disinfection family plus particulate in one unit.

Maximum protection: full-face, and supplied air for leaks. Pair any chlorine cartridge with a North 5400 or North 7600 full-face for eye protection. For cylinder changes, leak response, and unknown concentrations above the 10 ppm IDLH, use SCBA. Do not use the N75001L (organic vapor) or a plain 7580P100 Check Price on Amazon → (P100) for chlorine. When unsure, start with how to choose a respirator cartridge.

Honeywell North Cartridge Comparison Table for Chlorine

Best Honeywell North Cartridges for Chlorine — In Depth

Honeywell North 7582P100L (Acid Gas + P100)

Protection: acid-gas sorbent plus a 99.97% P100 filter. Ideal applications: water and wastewater treatment, chlorine handling where mist or particulate is present. Strengths: chlorine and acid-gas coverage with particulate in one cartridge. Weaknesses: valid only below the 10 ppm IDLH. Choose it when chlorine work involves any mist or dust. Do not choose it when the exposure could exceed the IDLH — use SCBA. Read the 7582P100L review.

Honeywell North N75002L (Acid Gas)

Protection: acid-gas sorbent, vapor only. Ideal applications: pure chlorine gas exposure with no particulate, below the IDLH. Strengths: focused, lightweight, economical. Weaknesses: no particulate filter. Choose it when chlorine gas is the only hazard. Do not choose it when mist or dust is present — step up to the 7582P100L. Read the N75002L review.

Honeywell North 75SCP100L (Multi-Contaminant + P100)

Protection: multi-contaminant gas sorbent (including chlorine and related acid gases) plus P100. Ideal applications: water-treatment plants and mixed disinfection-gas environments. Strengths: broadest single-cartridge coverage for the chlorine family. Weaknesses: higher cost than the focused 7582P100L. Choose it when several gases are present. Do not choose it when chlorine alone makes the 7582P100L sufficient. Read the 75SCP100L review.

Recommended Honeywell North Respirators for Chlorine

Chlorine attacks the eyes, so the respirator decision favors full-face. All North facepieces accept the chlorine cartridges via the shared bayonet.

For chlorine, default to a North 5400 or North 7600 full-face respirator, which protects the eyes and provides a protection factor of 50. A North 7700 or North 5500 half mask with the N75002L and sealed goggles can serve brief, low-level tasks. Compare full-face models in the North 5400 vs 7600 comparison and half masks in the North 5500 vs 7700 comparison, and browse all North full-face respirators and North half masks. For chlorine leaks and cylinder changes, none of these qualify — use SCBA, as detailed in the Honeywell North cartridge guide.

Common Cartridge Selection Mistakes for Chlorine

1. Using a P100 filter for chlorine gas. A P100 disc stops particles only. It provides zero protection against chlorine gas. Chlorine needs an acid-gas sorbent.

2. Using an organic-vapor cartridge. The N75001L is tuned for solvents, not the acid gas chlorine. It is the wrong sorbent.

3. Using a cartridge above the IDLH. Chlorine leaks blow past 10 ppm fast. Leaks, cylinder changes, and unknown concentrations demand SCBA, not the N75002L.

4. Choosing a half mask and ignoring the eyes. Chlorine stings the eyes at low levels. Full-face is the right default; half masks need tight goggles and only for brief low-level work.

5. Relying on odor as the change schedule. Chlorine smells sharp, but odor is not a compliant schedule. Use a written, data-based schedule under OSHA 1910.134, and replace at any breakthrough smell.

6. Mixing pool chemicals. Combining chlorine products with acids or ammonia cleaners generates chlorine or chloramine gas. Never mix pool chemicals, and ventilate before opening feeders.

When Should You Replace North Chlorine Cartridges?

Acid-gas cartridges saturate over time and must follow a written change schedule. Chlorine odor is a useful backstop — any breakthrough smell means replace immediately — but it is not a substitute for a data-based schedule.

Acid-gas cartridges are color-coded white. For the full methodology, see how long do respirator cartridges last and OSHA 29 CFR 1910.134; for the color code, see the respirator cartridge color chart. For sulfur dioxide, hydrogen chloride, and the rest of the acid-gas family, see our best respirator cartridge for acid gas guide.

Related reference

Neighbouring references 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 7580p100 vs 75scp100l: p100 filter vs multi-gas, honeywell north 7583p100l vs 75scp100l: which cartridge should you, honeywell north 75scl vs 75scp100l: multi-contaminant cartridge, and honeywell north n75001l vs n75002l: organic vapor vs acid gas.

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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.

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