MSA 815358 Advantage Gmd Ammonia Methylamine Cartridge Review

Is the MSA 815358 Advantage GMD the right ammonia cartridge for your Advantage-platform respirator?

Published June 10, 2026 · Last updated July 27, 2026

Short answer: Yes — if your hazard is ammonia or methylamine and you are already running an MSA Advantage 200 LS, 420, 1000, 3000, or 4000 respirator. The MSA 815358 is the correct snap-on cartridge for NH₃ and CH₃NH₂ applications on the Advantage platform, priced at the listed price per cartridge in a 2-pack. If you also need P100 particulate coverage or protection against acid gases and organic vapors, step up to the MSA Advantage GME-P100 (815366) — there is no GMD-P100 variant in the Advantage lineup, so the GME-P100 is the only snap-on option that pairs multi-gas with filtration on this platform.

Published under MSA 815358 Advantage GMD Ammonia / Methylamine Cartridge Review · MSA respirator filters and cartridges

Ammonia hazards are specific, frequently underestimated, and demand the right chemistry. The MSA 815358 Advantage GMD cartridge delivers a targeted sorbent formulation — activated carbon optimized for alkaline gas chemistry — matched to NH₃ and methylamine (CH₃NH₂). It does not attempt to cover organic vapors, acid gases, or particulates. That is a deliberate trade-off, not an oversight: single-chemistry cartridges typically provide longer service life on their target gas than multi-gas alternatives at a lower per-cartridge cost.

This review covers the 815358 within the full MSA Advantage cartridge family — where it fits, what it does well, where it falls short, and when a buyer should choose one of its siblings instead. The Advantage platform uses a proprietary snap-on mount, which means every cartridge referenced here is Advantage-specific; none are interchangeable with the MSA Comfo bayonet-mount line or any 3M platform.

Editorial Verdict: 4.4 / 5

The MSA 815358 Advantage GMD is a cost-effective, single-chemistry ammonia cartridge built for the Advantage snap-on platform. At the listed price per cartridge it is the lowest-cost NH₃ option for Advantage users, and it keeps the cartridge change-out simple in high-throughput environments like wastewater treatment or refrigeration maintenance. The only meaningful limitation is its narrow protection scope — if your environment has multiple hazard classes simultaneously, this cartridge is not the right tool.

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Who the MSA 815358 Is For

This cartridge is the right purchase decision for a specific buyer profile. If you match one of the following scenarios, the 815358 is the correct Advantage-platform cartridge for your application:

• Wastewater treatment operators using MSA Advantage half-masks who work around lift stations, headworks, or digester areas where NH₃ is the primary inorganic gas hazard — see the full MSA respirator filters and cartridges collection for platform options.
• Refrigeration technicians servicing R-717 (anhydrous ammonia) systems in cold storage or food-processing facilities where the Advantage platform is already standardized.
• Fertilizer handling workers in agriculture or distribution who face periodic anhydrous ammonia releases and need a cartridge compatible with their existing MSA Advantage 420 half-mask or Advantage 200 LS.
• Livestock facility supervisors who need a low-cost ammonia cartridge that technicians can change out quickly without tool access in field conditions.
• Procurement teams standardizing on MSA Advantage full-face platforms (Advantage 1000, 3000, 4000) for confined-space entry where ammonia is the identified chemical hazard — verify the APF matches your regulatory program requirements before issuing.

What the MSA 815358 Does Well

Targeted Alkaline Gas Chemistry

The GMD designation identifies a specific sorbent matrix optimized for alkaline inorganic gases — ammonia and methylamine. By not loading the carbon bed with adsorbents for organic vapor or acid gas chemistry, the cartridge directs all of its sorbent capacity toward the two compounds it is rated for. In single-hazard environments like anhydrous ammonia refrigeration or wastewater treatment, this approach typically yields longer service life on target compounds than an equivalent-volume multi-gas cartridge that splits capacity across more adsorbent types.

Platform Fit Across the Full Advantage Line

One cartridge SKU covers five Advantage respirator models: the Advantage 200 LS, the Advantage 420, and the full-face Advantage 1000, 3000, and 4000. This cross-model compatibility simplifies stockroom management for facilities that run mixed Advantage configurations — one part number handles the full site inventory for NH₃ protection.

Snap-On Change-Out Efficiency

The Advantage snap-on mount requires no tools and no thread engagement. A trained wearer can replace both cartridges in under 30 seconds. In high-throughput environments — large-scale fertilizer operations, refrigeration PM schedules with multiple techs — this difference in change-out time adds up meaningfully over a shift cycle. The snap-on mechanism also eliminates the over-torque risk that occasionally damages threaded receivers on bayonet-mount alternatives.

Cost-Effective for High-Volume NH₃ Programs

At the listed price per cartridge, the 815358 is the most affordable ammonia option on the Advantage platform. Compared to the sibling MSA Advantage GME (815359) at the listed price/cartridge, users who only face NH₃ hazards save approximately the listed price/per change-out event (pair of cartridges) by selecting the chemistry-specific option. For programs with frequent change-out schedules, that savings is material.

NIOSH Regulatory Compliance

The 815358 carries NIOSH approval under 42 CFR Part 84, meeting OSHA's 29 CFR 1910.134 cartridge requirements for NH₃ environments. APF of 10 on a half-mask or 50 on a full-face means the cartridge supports program compliance for most ammonia applications below IDLH concentrations when paired with a properly fit-tested Advantage mask.

Simple Hazard Communication Profile

A single-chemistry cartridge is easy to communicate in a written respiratory protection program. Safety managers can document exactly what the cartridge does and does not protect against, with no ambiguity about whether "multi-gas" coverage meets a specific OSHA citation. For facilities where the Industrial Hygienist has confirmed NH₃ and/or CH₃NH₂ as the only cartridge-relevant hazard, the 815358 keeps the program documentation straightforward.

Where the MSA 815358 Falls Short

No Particulate Protection — and No GMD-P100 Snap-On Option

The 815358 provides zero particulate filtration. In environments where ammonia co-exists with dusts, aerosols, or mists — fertilizer handling being the obvious example — workers need a combination solution. The Comfo platform has a GMD-P100 (bayonet-mount) option, but that cartridge does not fit the Advantage mount. On the Advantage platform, the closest available option is the MSA Advantage GME-P100 (815366), which adds P100 filtration but does so as part of the full multi-gas matrix (not GMD-specific chemistry). Buyers who specifically need NH₃ + P100 on the Advantage platform should consult their IH before selecting the GME-P100 as a substitute.

No End-of-Service-Life Indicator

Like all MSA Advantage cartridges, the 815358 has no ESLI. Ammonia is detectable by odor at low concentrations, which provides a crude warning for some users, but relying on odor alone is not an acceptable change-out criterion under OSHA 1910.134. Facilities using this cartridge must establish a change-out schedule based on concentration, temperature, humidity, and work rate per OSHA's change schedule requirements. This adds administrative burden that is absent with ESLI-equipped cartridges on other platforms.

Narrow Hazard Scope

The 815358 does not protect against organic vapors, acid gases, chlorine, hydrogen sulfide, carbon monoxide, mercury, or particulates. In environments with mixed or uncharacterized hazard profiles — as is common in wastewater treatment headworks where H₂S, CH₄, and CO may co-exist with NH₃ — the GMD cartridge is not sufficient on its own. The Advantage GME (815359) or GME-P100 (815366) are appropriate for mixed-gas environments, but neither covers CO — a separate supplied-air or SCBA solution is required for CO atmospheres.

Higher Per-Cartridge Cost vs Comfo GMD Bayonet

Users with flexibility to switch platforms should note that the MSA Comfo GMD (464033) delivers the same chemistry at approximately the listed price per pair versus the listed price per pair for the Advantage 815358. The per-cartridge premium for the Advantage snap-on is real — it reflects platform tooling, not chemistry differences. Teams not locked into Advantage respirators should compare total platform cost before committing.

Competitive Comparison: MSA 815358 vs Alternatives

Amazon price check — competitive cartridges: MSA Comfo GMD on Amazon

MSA Advantage Ammonia / Multi-Gas Cartridge Series Comparison

• Buy the MSA 815358 GMD if your IH has confirmed NH₃ or methylamine as the sole cartridge-relevant vapor hazard, you have no particulate co-exposure, and you want the lowest per-cartridge cost on the Advantage platform.
• Buy the MSA Advantage GME (815359) if your environment may also contain Cl₂, SO₂, H₂S, HCl, or HF — wastewater headworks being the primary example.
• Buy the MSA Advantage GME-P100 (815366) if you need any combination of multi-gas inorganic coverage plus particulate filtration on the Advantage platform.

Shop the Advantage ammonia/multi-gas series on Amazon → 815358 GMD 815359 GME 815366 GME-P100

Common questions

Does the MSA 815358 protect against particulates like dust or mist?

No. The MSA 815358 Advantage GMD contains only alkaline gas sorbent — it provides zero particulate filtration. If your work environment includes airborne dusts, mists, or aerosols alongside ammonia, the 815358 is not sufficient. On the Advantage snap-on platform, the closest option with particulate coverage is the MSA Advantage GME-P100 (815366), which pairs multi-gas chemistry with P100 filtration.

Is there an MSA Advantage GMD-P100 cartridge for ammonia + particulate on the snap-on platform?

No — there is no GMD-P100 variant in the MSA Advantage snap-on lineup. The MSA Comfo bayonet platform has a GMD-P100 option, but it does not fit Advantage respirators. On the Advantage platform, the GME-P100 (815366) is the only snap-on cartridge that includes both inorganic gas sorbent and P100 particulate filtration. Consult your IH before substituting GME chemistry for a GMD-specific requirement.

What respirators is the MSA 815358 compatible with?

The 815358 fits all MSA Advantage snap-on respirators: the Advantage 200 LS, Advantage 420 (both half-masks), and the Advantage 1000, 3000, and 4000 full-face models. It does not fit the MSA Comfo series (bayonet mount), the MSA Ultra Elite, or any 3M respirator platform.

MSA 815358 Advantage GMD vs MSA 464033 Comfo GMD — which should I buy?

Both deliver the same NH₃/CH₃NH₂ sorbent chemistry and NIOSH 42 CFR Part 84 approval. The difference is mount system. The 815358 snaps onto Advantage respirators; the 464033 threads onto MSA Comfo bayonet respirators. The Comfo GMD is slightly less expensive per cartridge. Buy the 815358 if you are already standardized on Advantage respirators; buy the Comfo GMD if you are on the Comfo platform or choosing a platform from scratch and want to minimize cartridge cost.

MSA 815358 vs MSA 815359 Advantage GME — which is the right choice?

The 815358 covers only NH₃ and methylamine. The 815359 GME covers a broader matrix including Cl₂, SO₂, HCl, HF, and H₂S in addition to NH₃ and methylamine. If your IH confirms your exposure is exclusively alkaline gas (NH₃/MA), the 815358 is the lower-cost, appropriately targeted choice. If there is any possibility of co-exposure to acid gases or reactive inorganics, the GME provides the breadth needed. Do not rely on odor alone to identify co-exposures — conduct air monitoring.

What is the NIOSH APF for the MSA 815358?

APF depends on the respirator, not the cartridge. With a properly fit-tested half-mask (Advantage 200 LS or 420), the APF is 10, meaning the respirator provides a minimum tenfold concentration reduction. With a full-face Advantage respirator (1000, 3000, or 4000), the APF is 50. The cartridge itself is NIOSH-approved under 42 CFR Part 84 for the listed chemistries.

Does the MSA 815358 have an end-of-service-life indicator (ESLI)?

No. The 815358 has no ESLI. Ammonia's detectable odor provides some warning, but OSHA 29 CFR 1910.134 requires a written change-out schedule when no ESLI is present. The schedule must account for concentration, temperature, humidity, and work rate. Consult a CIH and reference the MSA Technical Data Sheet to develop a compliant schedule.

Can the MSA 815358 be used for IDLH ammonia concentrations?

No. Air-purifying respirators are not approved for IDLH atmospheres. The NIOSH IDLH for ammonia is 300 ppm. At or above IDLH, supplied-air respirators or SCBA are required under OSHA 1910.134. The 815358 is appropriate for non-IDLH ammonia environments with confirmed hazard levels below the IDLH and within the cartridge's breakthrough capacity.

What applications is the MSA 815358 designed for?

Primary applications include wastewater treatment (lift stations, headworks, digester areas), refrigeration maintenance on R-717 (anhydrous ammonia) systems in food processing or cold storage, fertilizer handling and application, livestock facility operations, and chemical processing areas where NH₃ is a characterized hazard. In all cases, a completed respiratory protection program with IH oversight and written change-out schedule is required before deployment.

Does the MSA 815358 fit the MSA Ultra Elite full-face respirator?

No. The MSA Ultra Elite uses a different cartridge mount system than the Advantage platform. The MSA Ultra Elite uses the Comfo bayonet mount, which accepts the MSA Comfo cartridge line (including the 464033 GMD), not the Advantage snap-on cartridges. Confirm the mount system of your specific respirator model before ordering cartridges.

How many cartridges come in a box of MSA 815358?

The MSA 815358 is sold as a 2-pack at the listed price (the listed price per cartridge). One 2-pack provides one complete change-out (both left and right cartridges on a half-mask or full-face). Larger case quantities may be available through direct MSA Safety distribution — see the MSA respirator filters and cartridges collection for current stock.

Can I stack a P100 filter over the MSA 815358 on the Advantage platform?

The Advantage snap-on platform allows certain filter accessories to be layered, but compatibility must be confirmed for your specific Advantage model. Consult the MSA Safety TDS and your respirator's instructions for use before stacking components. From a regulatory standpoint, only NIOSH-approved cartridge configurations are acceptable under OSHA 1910.134 — self-assembled stacks that are not part of an approved assembly may not comply.

What does the MSA 815358 NOT protect against?

The 815358 does not protect against organic vapors (solvents, fuels), acid gases (HCl, SO₂, HF, HNO₃), chlorine gas, hydrogen sulfide (beyond what may appear in the GME matrix), carbon monoxide, mercury vapor, radioiodine, particulates, aerosols, or biological agents. It is rated exclusively for NH₃ and CH₃NH₂. Hazard characterization by a CIH is mandatory before issuing any cartridge in a formal respiratory protection program.

MSA 815358 vs MSA 815366 Advantage GME-P100 — what is the difference?

The 815358 provides alkaline gas protection only (NH₃/MA) with no particulate filtration. The 815366 GME-P100 adds both the full multi-gas inorganic chemistry matrix (extending coverage to Cl₂, SO₂, HCl, HF, H₂S) and P100 particulate filtration (≥99.97%). The GME-P100 costs the listed price per cartridge — the listed price more than the GMD. Buy the GME-P100 when your environment demands multi-gas plus particulate coverage; buy the GMD when NH₃/MA is the sole hazard and you want the lowest cost option.

What is the shelf life of the MSA 815358 cartridge?

MSA publishes storage life data in the product TDS. Sealed cartridges are typically rated for 5 years from manufacture date when stored per MSA's guidelines (cool, dry conditions, sealed in original packaging). Once the cartridge is opened and exposed to ambient air, the change-out schedule begins regardless of concentration exposure. Do not rely on an opened cartridge that has been sitting idle in a storage locker — treat ambient exposure time as service time.

Sources. Requirements referenced here come from OSHA 29 CFR 1910 and the NIOSH recommendations. Where a consensus standard governs, the ANSI document is named in the text.

Related reference

Related reading in this area: 3m 6004, 3m 60924, 3m versaflo tr-6360n ammonia/methylamine he cartridge 5-pack review, honeywell north n75002l vs 7582p100l: acid gas vs acid gas/p100 — when, how to choose a respirator cartridge: complete selection guide, and msa gmc-p100 vs 3m 60923: ov/acid gas/p100 cartridge comparison.

Why trust WC Safety

WC Safety is an independent, affiliate-supported review site. It is not a retailer: it holds no inventory, takes no orders, and earns only from qualifying purchases through clearly marked links — which never changes what a product is rated to do. Standards language is taken from the regulation text directly, and ratings are reported as the manufacturer publishes them. We run no laboratory and perform no testing of our own. Where published sources disagree, we say so and plan on the conservative figure rather than the flattering one.

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.