Honeywell North 75SCL Defender Multi-Gas Cartridge — North Bayonet

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Read our hands-on Honeywell North 75SCL review for field-tested buyer notes.

Honeywell North 75SCL Defender Multi-Gas Cartridge Overview

The Honeywell North 75SCL Defender multi-gas cartridge is a NIOSH-approved cartridge that snaps onto North bayonet half- and full-face respirators to protect against a broad mix of gases — organic vapor, acid gas, ammonia, methylamine and formaldehyde. It is the "one cartridge covers most gases" choice in the North N-series for maintenance, emergency response, labs and chemical work. If you are deciding which gas class you need, start with our guide to choosing a respirator cartridge and the Honeywell North cartridge guide, then confirm the color code on the respirator cartridge color chart.

As a Honeywell North multi-gas cartridge, the 75SCL belongs to the Honeywell North respirator filters and cartridges family. Buy the 75SCL cartridge when you face several gas hazards at once; choose a single-class cartridge if you face only one, or add particulate protection for dusty work.

Where the 75SCL Fits in Cartridge Selection

Confirm the hazards before the cartridge. The 75SCL handles a wide range of gases and vapors — but not airborne particles. If you are weighing gas coverage against dust protection, our organic vapor vs P100 guide and respirator filter types explained walk through the difference. When dust is also present, add a prefilter or move to the multi-gas/P100 combination.

Who Should Buy the 75SCL?

Buy it if your work involves several or changing gas hazards — facility maintenance, emergency response, labs, and chemical handling where OV, acid gas, ammonia and formaldehyde may all appear. Choose another cartridge if your hazard is a single known class: pick the N75001L for organic vapor, the N75002L for acid gas, the N75004L for ammonia, or add particulate with the 75SCP100L multi-gas/P100 combination.

What Does the 75SCL Protect Against?

What the 75SCL Does NOT Protect Against

The 75SCL does not stop particulate, which needs a 7580P100 filter or the 75SCP100L combination, and it does not cover gases outside its NIOSH-approved list. For a single high-volume hazard, a dedicated cartridge like the N75003L may last longer.

No air-purifying cartridge makes a dangerous atmosphere safe. Never use the 75SCL in an oxygen-deficient or IDLH (immediately dangerous to life or health) atmosphere, in unknown concentrations, or against gases with no warning properties — those conditions require a supplied-air or SCBA system, not a cartridge respirator.

Best Applications

Maintenance & emergency response

Where the gas hazard is mixed or not fully known, the 75SCL's broad coverage is the safe default. See the broader options in our best respirator for chemical workers guide.

Labs & chemical handling

Labs that move between solvents, acids, ammonia and formaldehyde benefit from one multi-gas cartridge. Compare it against the 3M equivalent in our 75SCL vs 3M 6006 guide.

Pros & Cons

Compatible North Respirators

The 75SCL uses the North bayonet connection, so it mounts on the North half-mask respirators (5500 and 7700 series) and North full-face respirators (5400 and 7600 series). For dust as well, fit a North 7506-series prefilter over the cartridge. It does not fit 3M or MSA facepieces.

75SCL vs Other North Cartridges

75SCL vs the Alternatives

If you are weighing the 75SCL against another North cartridge, the decision comes down to how broad your hazard is:

• 75SCL vs 75SCP100L: the 75SCL is gas only; the 75SCP100L adds a P100 filter for gas + dust. Full comparison →
• 75SCL vs N75003L: the 75SCL adds ammonia, methylamine and formaldehyde; the N75003L covers only OV + acid gas at lower cost.
• 75SCL vs 3M 6006: both are multi-gas, but on different connection systems. See the North vs 3M comparison →

75SCL Quick Answers

Is the Honeywell North 75SCL reusable?

The cartridge is reusable until its service life is reached; replace it on schedule or when you detect gas. The respirator itself is reusable across many cartridge changes.

What gases does the 75SCL Defender cover?

Organic vapor, acid gas (chlorine, hydrogen chloride, sulfur dioxide), ammonia, methylamine and formaldehyde — confirm your specific gas on the cartridge color chart and NIOSH approval.

Does the 75SCL fit North 5500 and 7700 respirators?

Yes. The North bayonet connection fits the 5500 and 7700 series half masks and the 5400 and 7600 series full-face respirators.

Is the 75SCL worth it over a single-gas cartridge?

If your hazard is mixed or uncertain, yes — one 75SCL cartridge replaces several. For a single known gas at high volume, a dedicated cartridge is cheaper per use.

75SCL Specifications

Helpful Buying Guides

• Honeywell North cartridge guide
• How to choose a respirator cartridge
• Organic vapor vs P100
• Respirator cartridge color chart
• Respirator filter types explained
• Honeywell North vs 3M respirators

Honeywell North 75SCL Frequently Asked Questions

What does the Honeywell North 75SCL Defender protect against?

The 75SCL is a multi-gas cartridge. It adsorbs organic vapor, acid gases (chlorine, hydrogen chloride, sulfur dioxide), ammonia, methylamine and formaldehyde, but not dust, fume or oil mist.

Which respirators does the 75SCL fit?

It uses the North bayonet connection, so it fits North 5500 and 7700 series half masks and North 5400 and 7600 series full-face respirators. It does not fit 3M or MSA respirators.

Does the 75SCL filter dust or particulates?

No. The 75SCL is a gas-and-vapor cartridge with no particulate filter. Fit a North 7506-series prefilter over it, or step up to the 75SCP100L multi-gas/P100 combination.

Why choose the 75SCL Defender over a single-gas cartridge?

It covers a broad mix of gases in one cartridge, ideal where multiple or unknown gas hazards are present. For a single known hazard, a dedicated cartridge can be more economical.

Is the 75SCL NIOSH-approved?

Yes, under 42 CFR Part 84 for its listed gases and vapors. You can verify it against the NIOSH Certified Equipment List.

How often should I replace the 75SCL?

Replace it on a documented change-out schedule, or sooner if you detect gas, get irritation, or breathing becomes harder. A written schedule is especially important for formaldehyde.

Does the 75SCL protect against formaldehyde?

Yes — formaldehyde is one of its approved gases. Use a strict change schedule because formaldehyde has poor odor warning.

What is the difference between the 75SCL and the 75SCP100L?

The 75SCL is multi-gas only; the 75SCP100L adds a P100 particulate filter for dusty work.

Is the 75SCL the same as a particulate filter?

No. It is a gas cartridge, not a particulate filter. For dust and mist use a P100 such as the 7580P100, or the 75SCP100L combo.

Is this the genuine Honeywell North 75SCL Defender cartridge?

Yes. WC Safety sells authentic, NIOSH-approved Honeywell North 75SCL Defender cartridges through legitimate supply channels.

Can I buy the 75SCL in bulk or by the case?

Yes. Use the Request a Quote option for case and pallet pricing on volume orders.

How should I store the 75SCL?

Store it sealed in its original packaging, away from gases, so its service life is not used up before you wear it.