Honeywell North N75002L Acid Gas Respirator Cartridge

Honeywell North N75002L Overview

The Honeywell North N75002L is a NIOSH-approved acid gas cartridge that protects against chlorine (Cl₂), hydrogen chloride (HCl), sulfur dioxide (SO₂), and formaldehyde on Honeywell North respirators. It uses the universal North bayonet connection shared by all cartridges and filters in the North 75 series line, and it is sold as a pair — one cartridge per side. Buy the N75002L when your risk assessment identifies acid gas or formaldehyde as the sole airborne hazard and your respirator is a North 5500, 7700, 5400, or 7600 series facepiece.

This is a gas-only cartridge with no particulate filter media — it adsorbs acid gas molecules but does not capture dust, mist, or fumes. When both acid gas and particulate hazards are present, the correct selection is the 7582P100L acid gas + P100 combination cartridge. For organic vapor co-protection, the N75003L organic vapor + acid gas cartridge covers both hazard classes. To understand how to match cartridge type to hazard, read the how to choose a respirator cartridge guide and the Honeywell North cartridge guide, or browse the full Honeywell North respirator filters and cartridges collection.

Where the N75002L Fits in Respirator Selection

Before ordering, confirm two things: that your respirator is a Honeywell North 5500, 7700, 5400, or 7600 series facepiece (North bayonet connection), and that your hazard is acid gas or formaldehyde with no significant particulate component.

• North respirator + acid gas only → the N75002L is the correct cartridge.
• North respirator + acid gas + particulate → the 7582P100L acid gas + P100 combination cartridge adds P100 filtration.
• North respirator + organic vapor + acid gas → the N75003L OV + acid gas cartridge.
• North respirator + acid gas + OV + P100 → the 7583P100L OV + acid gas + P100 combination cartridge.
• North respirator + organic vapor only → the N75001L organic vapor cartridge.
• Not sure whether you need acid gas or OV protection? The respirator filter types explained guide and the respirator cartridge color chart walk through the decision by hazard class.

Who Should Buy the Honeywell North N75002L?

Buy the N75002L if you run a Honeywell North 5500, 7700, 5400, or 7600 respirator and your workplace hazard assessment confirms acid gas or formaldehyde exposure — chlorinating operations, wastewater treatment, chemical processing, pool maintenance, or industrial cleaning — with no significant airborne particulate co-hazard.

Choose a different cartridge if:

• Particulate, dust, or mist is also present → the 7582P100L acid gas + P100 combination adds particulate protection.
• Organic vapors are also a co-hazard → the N75003L OV + acid gas cartridge.
• Both OV and particulate accompany the acid gas → the 7583P100L OV + acid gas + P100 combination.
• Mercury vapor or chlorine + P100 are needed → the 75852P100L mercury vapor/chlorine + P100 cartridge.
• You use a 3M, Moldex, or any other brand respirator → the North bayonet is not interchangeable with any other manufacturer's connection; use cartridges rated for your specific respirator platform.

What Does the N75002L Protect Against?

What the N75002L Does NOT Protect Against

• Organic vapors (solvents, fuels)
• Ammonia / methylamine
• Mercury vapor
• Carbon monoxide
• Particulate / dust / mist
• Welding fumes
• Silica dust
• Oxygen deficiency
• Unknown atmospheres
• IDLH conditions

Safety: The N75002L is an acid gas cartridge only and provides no particulate, organic vapor, ammonia, or mercury protection, and no cartridge adds oxygen to the breathing air. Oxygen-deficient, unknown, and IDLH atmospheres require supplied air, SCBA, or another solution specified by a qualified safety professional. When airborne particulate accompanies the acid gas hazard, use a combination cartridge such as the 7582P100L (acid gas + P100). Cartridge selection must follow a written workplace hazard assessment per OSHA 1910.134.

Best Applications for the N75002L

Water Treatment & Pool Chemical Operations

Chlorine gas and chloramines are the dominant hazard in water treatment facilities, municipal chlorination systems, and indoor pool chemical handling. The N75002L's acid gas rating covers Cl₂ directly, making it a practical choice for workers handling chlorine cylinders, dosing systems, or pool chemical maintenance where no significant particulate co-hazard exists. Browse compatible respirators in the Honeywell North filters and cartridges collection.

Chemical Processing & Industrial Cleaning

HCl (hydrochloric acid), SO₂, and formaldehyde appear across a range of industrial chemical processes — acid pickling, metal etching, flue gas treatment, and industrial cleaning — where vapor exposure is the primary concern and particulate is not present. The N75002L covers these acid gas exposures on any North bayonet respirator. Consult the cartridge selection guide to confirm your specific chemical is within the acid gas class before ordering.

Laboratories & Analytical Chemistry

Formaldehyde, HCl, and other acid gas exposures arise in histology labs, tissue fixation, and general analytical chemistry. The N75002L's formaldehyde and acid gas coverage addresses these low-level but chronic inhalation risks. For lab environments where both organic solvent vapors and acid gases are present, the N75003L OV + acid gas cartridge is the more complete selection.

Pulp, Paper & Combustion Environments

Sulfur dioxide is a byproduct of combustion and chemical pulping processes. The N75002L addresses SO₂ exposure for workers in these industries when the hazard is gas only and no particulate co-hazard is identified in the risk assessment. Refer to the respirator filter types explained guide to confirm that a gas-only cartridge is appropriate for your specific task.

Honeywell North N75002L Pros & Cons

Compatible Honeywell North Respirators

The N75002L uses the Honeywell North universal bayonet connection — one standard interface shared by all cartridges and filters in the North 75 series. It fits all four Honeywell North respirator platforms. It does not fit any 3M, Moldex, GVS, or other brand respirator.

The North universal bayonet is a brand-specific connection — North cartridges and filters are not interchangeable with 3M bayonet, 3M Secure Click, Moldex, or any other brand's respirator. Always verify your facepiece model before ordering cartridges. Browse the full Honeywell North filters and cartridges collection for compatible accessories.

N75002L vs Other Honeywell North Cartridges

N75002L vs 7582P100L

This is the most common North acid gas purchase decision. Both protect against acid gases (chlorine, HCl, SO₂) on North respirators, but the 7582P100L adds a P100 particulate filter layer, making it the correct choice in any environment where dust, mist, or airborne fumes accompany the acid gas hazard — such as acid mist from HCl solutions or particulate in chemical manufacturing. If your hazard assessment confirms acid gas vapor only with no particulate component, the N75002L delivers the same gas protection at a lower cost per pair. When in doubt about particulate co-exposure, the 7582P100L is the safer, more complete selection. Consult the respirator filter types explained guide for the full breakdown.

N75002L vs N75003L

The N75002L covers acid gas and formaldehyde only; the N75003L adds organic vapor protection — covering solvents, hydrocarbons, ketones, esters, and alcohols alongside the acid gas hazard class. Choose the N75003L when your hazard assessment identifies both organic solvents and acid gases in the same environment (e.g., chemical labs, paint stripping with acidic cleaners, or mixed-chemistry industrial processes). Choose the N75002L when the only gas hazard present is acid class and no organic vapor exposure has been identified. Refer to the best Honeywell North cartridge for paint fumes guide if a painting application involves both solvent vapors and acid gas co-exposure.

N75002L vs 75SCL Defender

The 75SCL Defender is a multi-gas cartridge that covers organic vapor, acid gas, and ammonia/methylamine simultaneously on North respirators. Choose the 75SCL when multiple distinct gas hazard classes — OV, acid gas, and ammonia — are all present in one environment, or when your hazard assessment is complex enough that a broad-spectrum approach is warranted. Choose the N75002L when the hazard is specifically and solely acid gas or formaldehyde, since a purpose-built single-class cartridge is easier to manage for end-of-service-life scheduling in well-defined acid gas programs. See the Honeywell North cartridge guide for a full overview of the North 75 series selection logic.

Honeywell North N75002L Quick Answers

What is the Honeywell North N75002L?

The Honeywell North N75002L is a NIOSH-approved acid gas respirator cartridge that protects against chlorine (Cl₂), hydrogen chloride (HCl), sulfur dioxide (SO₂), and formaldehyde. It uses the universal North bayonet connection and is sold as a pair — one cartridge per side — for use on North 5500, 7700, 5400, and 7600 respirators.

What respirators does the N75002L fit?

The N75002L fits all four Honeywell North respirator platforms that use the North universal bayonet connection: the North 5500 half-face, North 7700 half-face, North 5400 full-face, and North 7600 full-face. It does not fit 3M bayonet, 3M Secure Click, Moldex, or any other brand's respirators.

Does the N75002L protect against dust or particulate?

No. The N75002L is an acid gas cartridge only and contains no particulate filter media. When airborne particulate, dust, or mist accompanies the acid gas hazard, the correct selection is the 7582P100L acid gas + P100 combination cartridge.

Does the N75002L protect against organic vapors?

No. The N75002L is rated for acid gas and formaldehyde only — it does not adsorb organic solvents or hydrocarbon vapors. For environments where both organic vapors and acid gases are present, use the N75003L (OV + acid gas) cartridge instead.

How many cartridges come in the N75002L package?

The N75002L is sold as one pair — two cartridges — which is the standard quantity for a dual-cartridge half-face or full-face respirator. One cartridge seats on each side of the facepiece.

Can the N75002L be used for chlorine gas exposure?

Yes. Chlorine (Cl₂) is within the acid gas class that the N75002L is rated for, making it appropriate for water treatment, pool chemical handling, and chlorination operations where only chlorine gas vapor is present and no particulate co-hazard exists. If particulate or mist is also a concern, use the 7582P100L instead.

Is the N75002L compatible with 3M respirators?

No. The N75002L uses the Honeywell North universal bayonet connection, which is physically incompatible with 3M bayonet respirators, 3M Secure Click masks, Moldex respirators, and all other non-North platforms. Attempting to fit a North cartridge onto a non-North facepiece creates a failed seal and provides no protection.

Honeywell North N75002L Specifications

Helpful Buying Guides

• Honeywell North Cartridge & Filter Guide
• Best Honeywell North Respirator Filters and Cartridges
• How to Choose a Respirator Cartridge
• Respirator Filter Types Explained
• Respirator Cartridge Color Chart
• Organic Vapor vs P100 — Which Do You Need?
• P100 vs N95 — What's the Difference?
• Best Honeywell North Cartridge for Paint Fumes

Honeywell North N75002L Frequently Asked Questions

What gases does the Honeywell North N75002L protect against?

The N75002L protects against acid gases — specifically chlorine (Cl₂), hydrogen chloride (HCl), and sulfur dioxide (SO₂) — as well as formaldehyde. It does not protect against organic vapors, ammonia, mercury vapor, or particulate matter.

Which North respirators are compatible with the N75002L?

The N75002L is compatible with all Honeywell North respirators that use the North universal bayonet connection: the 5500 series half-face, the 7700 series half-face, the 5400 series full-face, and the 7600 series full-face. No other brand's respirators accept North cartridges.

Can I use the N75002L on a 3M respirator?

No. The N75002L uses the Honeywell North universal bayonet, which is not physically compatible with 3M bayonet masks, 3M Secure Click respirators, or any other non-North platform. Fitting a mismatched cartridge creates a failed seal and provides no respiratory protection.

Does the N75002L protect against dust, silica, or welding fumes?

No. The N75002L contains no particulate filter media and provides zero protection against dust, silica, welding fumes, or any other airborne particle. When particulate is present alongside acid gas, use the 7582P100L acid gas + P100 combination cartridge, which provides both acid gas and P100 particulate protection in one unit.

What is the difference between the N75002L and the 7582P100L?

Both cartridges protect against acid gases on North respirators. The 7582P100L adds a P100 particulate filter layer, making it the correct choice when dust, mist, or aerosols accompany the acid gas hazard. The N75002L is a gas-only cartridge suited to environments where a hazard assessment confirms acid gas vapor with no significant particulate co-exposure.

What is the difference between the N75002L and the N75003L?

The N75002L provides acid gas and formaldehyde protection only. The N75003L adds organic vapor protection — covering solvents, hydrocarbons, and ketones alongside acid gases. Choose the N75003L when both organic vapors and acid gases are identified in your risk assessment; choose the N75002L when acid gas is the sole gas hazard.

Is the N75002L suitable for chlorine gas exposure in water treatment?

Yes. Chlorine (Cl₂) is within the acid gas class covered by the N75002L, making it appropriate for water treatment, pool chemical handling, and municipal chlorination work where vapor is the primary hazard and no particulate co-hazard exists. Verify that airborne concentrations are within the cartridge's service-life limits for your work environment.

How many N75002L cartridges are in a package?

The N75002L is sold as one pair — two cartridges. This is the standard quantity for a dual-cartridge half-face or full-face respirator, with one cartridge fitted to each side of the facepiece. Confirm pack quantity on the current listing before placing bulk orders.

Does the N75002L protect against formaldehyde?

Yes. Formaldehyde is listed within the N75002L's protection scope alongside the acid gas class. This makes it relevant for histology, tissue fixation, laboratory, and industrial applications where formaldehyde exposure is the primary concern and no organic vapor or particulate co-hazard is present.

When should I replace the N75002L cartridges?

Replace the N75002L when you detect odor or taste breakthrough, when the cartridge is physically damaged or soiled, or per your employer's scheduled cartridge change-out interval established under a written respiratory protection program per OSHA 1910.134. Gas cartridges without an electronic ESLI require a change-schedule based on workplace hygiene data and cartridge service-life modeling.

Does the N75002L protect against ammonia or methylamine?

No. Ammonia and methylamine protection is a separate hazard class not covered by the N75002L's acid gas rating. For ammonia or methylamine exposure on a North respirator, use the N75004L ammonia/methylamine cartridge or the 75SCL Defender multi-gas cartridge, which covers both acid gas and ammonia classes.

Can the N75002L be used for sulfur dioxide in combustion or industrial environments?

Yes. Sulfur dioxide (SO₂) is within the acid gas class protected by the N75002L, making it appropriate for combustion environments, pulp and paper processing, and industrial operations where SO₂ is the confirmed gas hazard and no particulate co-exposure is present. When both SO₂ and particulate are identified, the 7582P100L acid gas + P100 combination is the correct selection.

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