Sundström SR 232 Chemical Cartridge — OV/SD/CL/HC/HF Gas & Vapor (H02-3721)
$68.50
Final price set by Amazon · may vary
Filter Type: SR 232 OV/AG Cartridge (4-pk)
EDITORIAL REVIEW: 4.6/5 WC Safety Review — the Sundström SR 232 Chemical Cartridge Editorial assessment by the WC Safety Editorial Team, based on Sundström published specifications and the NIOSH cartridge classes....
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EDITORIAL REVIEW: 4.6/5 WC Safety Review — the Sundström SR 232 Chemical Cartridge
Editorial assessment by the WC Safety Editorial Team, based on Sundström published specifications and the NIOSH cartridge classes. We did not laboratory-test this product.
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Sundström SR 232 Chemical Cartridge Overview
The Sundström SR 232 Chemical Cartridge (H02-3721) is a gas and vapor cartridge that protects against organic vapors, sulfur dioxide, chlorine, hydrogen chloride, and hydrogen fluoride when fitted to an approved Sundström respirator.
As the Sundström SR 232, this H02-3721 cartridge is the SR 232 OV SD CL HC HF media — a Sundström gas cartridge and a purpose-built OV acid gas respirator cartridge.
It is a chemical cartridge only, not a particulate filter; for aerosols such as spray-paint mist, combine it with the Sundström SR 510 P3 particulate filter (sold separately). Because NIOSH approval is assembly-specific, confirm your exact Sundström facepiece or SR 500 setup against Sundström's data. Learn more in OV vs acid-gas cartridges and are respirator cartridges universal.
What It Protects Against
| Class | Hazard | Buyer guidance |
|---|---|---|
| OV | Organic vapors | Solvents, many paints. |
| SD | Sulfur dioxide | Acid-gas exposure. |
| CL / HC / HF | Chlorine, hydrogen chloride, hydrogen fluoride | Match to your SDS. |
| Aerosols | Dust, mist, spray | Add SR 510 P3 (separate). |
| Other gases | Ammonia, CO, formaldehyde | Not covered; use other media. |
A chemical cartridge only removes the specific gases and vapors it is rated for, and it adds no oxygen, so it protects within strict limits. This SR 232 covers OV plus the SD, CL, HC, and HF acid gases; it does not cover every hazard, and gases like carbon monoxide are not captured by any cartridge. No air-purifying respirator, powered or not, may be used in an oxygen-deficient atmosphere or one that is immediately dangerous to life or health (IDLH) — those require a supplied-air respirator or a self-contained breathing apparatus (SCBA) and, for confined spaces, entry procedures. The cartridge only works on a fit-tested, clean-shaven seal within an OSHA 29 CFR 1910.134 program, on a Sundström-approved assembly, and it must be changed on schedule before breakthrough, since some of these gases give little or no odor warning. Match the media to your safety data sheets. See best acid-gas cartridge and organic vapor vs P100.
Pros & Cons
Pros
- Covers OV plus SD/CL/HC/HF acid gases
- Genuine Sundström media
- Combines with SR 510 P3 for aerosols
- Fits Sundström approved assemblies
- Clear hazard-class labeling
Cons
- Gas only; particulate filter separate
- Does not cover ammonia, CO, formaldehyde
- Sundström-specific, not universal
- Not for IDLH or oxygen-deficient air
How It Compares
The SR 232 is one Sundström media choice. Weigh it against nearby options:
| Option | Type | Covers | Best for |
|---|---|---|---|
| Sundström SR 232 (this page) | Gas/vapor cartridge | OV + SD/CL/HC/HF | Organic vapor and acid gases |
| Sundström SR 510 P3 | Particulate filter | Dust, mist, aerosols | Particles (pair with SR 232) |
| Broader multi-gas filter | Multi-gas | Wider gas range | Mixed or unknown gases |
Choose the Sundström SR 232 Chemical Cartridge for OV and acid gases, add a particulate filter for aerosols, or step up to a broader multi-gas filter for mixed hazards. It pairs with the Sundström SR 500/520 PAPR kit; compare in OV vs multi-gas cartridges.
Specifications
| Brand / Model | Sundström SR 232 (H02-3721) |
| Type | Chemical (gas/vapor) cartridge; not a particulate filter |
| Protects against | OV, SD, CL, HC, HF (organic vapor + listed acid gases) |
| Particulate | Combine with Sundström SR 510 P3 (sold separately) |
| Compatibility | Sundström respirators; confirm the approved assembly with Sundström |
| Not for | Ammonia, CO, formaldehyde; IDLH or oxygen-deficient air |
Related Guides
OV vs acid-gas cartridges, best acid-gas cartridge, organic vapor vs P100, are cartridges universal, best PAPR systems, respirator filters and cartridges guide.
Related Resources
Gas and vapor cartridges combination cartridges respiratory protection Sundström SR 500/520 PAPR kit half-mask respirators
Frequently Asked Questions
What is the Sundström SR 232 cartridge (H02-3721)?
It is a chemical cartridge that removes certain gases and vapors from the air you breathe through a Sundström respirator. Its part number is H02-3721, and it is a gas or vapor element only, not a particulate filter, so it does not by itself capture dusts or mists.
What do the letters OV/SD/CL/HC/HF mean?
They are the hazard classes it is rated for: OV is organic vapors, SD is sulfur dioxide, CL is chlorine, HC is hydrogen chloride, and HF is hydrogen fluoride. Match this to the specific chemicals on your safety data sheets before relying on it.
Does the SR 232 fit Sundström SR 100 and SR 200 masks?
Sundström lists the SR 232 for use with its half masks and full-face masks. Confirm your exact facepiece against Sundström's current compatibility data, since the approved assembly, not just the cartridge, is what carries the NIOSH approval and protection.
Can I use the SR 232 as a non-powered (APR) cartridge?
The SR 232 is a chemical cartridge used on Sundström facepieces as an air-purifying respirator. Whether your setup is powered or non-powered, you must build only Sundström-approved assemblies and follow the approval, because mixing unapproved parts voids the protection.
Does the SR 232 protect against ammonia, carbon monoxide, or formaldehyde?
Not necessarily. Its rated classes are OV, SD, CL, HC, and HF. Ammonia, carbon monoxide, and formaldehyde are different hazards that often need different media or, for carbon monoxide, are not handled by any cartridge. Match media to your specific gas.
What is the difference between the SR 232 and Sundström's other gas filters?
The SR 232 covers OV plus several acid gases (SD/CL/HC/HF). Sundström also offers broader multi-gas filters for its systems. Choose the SR 232 when your hazards fall in its classes, and step up to a broader filter when you face other gases.
Can the SR 232 be used in a confined space or low-oxygen air?
No. A cartridge only removes specific gases; it adds no oxygen. In a confined space or any low-oxygen or immediately hazardous atmosphere you need a supplied-air system or self-contained breathing apparatus, plus confined-space entry procedures, not an air-purifying cartridge.
Does temperature or humidity affect the cartridge?
Yes. High humidity and heat can shorten the service life of a gas or vapor cartridge, and some chemicals break through faster in those conditions. Follow Sundström's guidance and your change schedule, and store cartridges within their stated conditions.
Can I reseal and reuse an opened cartridge?
Once in use, a gas cartridge begins to load and can continue to off-gas or degrade, so treat opened cartridges per your change schedule rather than assuming they reset. When in doubt, replace it; do not stretch a cartridge past its service life.
How should I store the cartridges between uses?
Keep unopened cartridges sealed in a clean, dry place within their rated temperature range, and do not use one past its shelf life. Note when a cartridge is put into service so you can track its change schedule accurately.
What industries and tasks is the SR 232 used for?
It suits tasks with organic vapors and the listed acid gases, such as some painting, coating, and chemical handling. Because those often also create aerosols, it is frequently paired with a particulate filter for combined gas-and-particle protection.
How do I dispose of a used chemical cartridge?
Follow your facility's hazardous-waste procedures and any local regulations, since a spent cartridge can hold captured contaminants. Do not burn it or cut it open, and keep used and fresh cartridges clearly separated so no one grabs a spent one.
Written by Steven Eaton, WC Safety Editorial. Specifications sourced from Sundström published data and the NIOSH cartridge classes. Compare the range in gas and vapor cartridges.
WC Safety is an independent PPE retailer; no paid placement. A cartridge protects only on a fit-tested, Sundström-approved assembly and only against the gases it is rated for; use supplied air where the air is unsafe to filter.
⭐ Rated 4.8★ on Amazon across 19 verified ratings (Amazon.com, Jun 2026)
Brand / Vendor
Sundström Safety
Model / SKU
H02-3721
Product Type
PAPR Filters & Cartridges
Price
$68.50 (Amazon)
Rating
5.0 / 5 — 2 reviews
Availability
Check current availability on Amazon
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Customer Reviews
★★★★★4.8 / 5· 19 ratings on Amazon
★★★★★
Not the best packaging, but definitely authentic
Fortunately these are individually sealed, but just know that the quality of packaging on these, can vary significantly from order to order regardless of seller. You're basically getting the overstock or something that has been on the shelf for quite a while, or under a few other boxes. But, that said, the individual seals really help make this product worth the purchase, as it gives peice of mind. AND they are genuine NOSH approved cartridges, so that's a bonus.Disclaimer: If you need these filters to combat serious chemical warfare situations, or some other serious chemical protection situation that could lead to death without such equipment, I'd strongly recommend either going elsewhere to purchase OR making sure your package is one that's well put together. Otherwise you might be using renewed products which are still the genuine filters, but may not have quite the same stringent quality control standards. The product quality does seem more than fitting enough for any airborne illness, chemical toxins that are non deadly, and chemical toxins that would be deadly only due to prexisting conditions like asthma.
Verified Purchaser · July 28, 2 · ✓ Amazon Verified Purchase
★★★★★
Delivered and quality as expected.
Delivered and quality as expected.
Verified Purchaser · December 1 · ✓ Amazon Verified Purchase
Showing 2 of 19 Amazon reviews.
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