The MIRA Safety P-CAN police gas mask filter delivers over 12 hours of protection against riot control agents including CS, CN, and OC pepper spray. Rated A2SXP3 D R and certified to EN 14387:2004+A1:2008, this 290-gram canister threads onto any standard 40 mm NATO-threaded respirator and carries a 20-year factory-sealed shelf life. Available as an individual canister or in multi-pack configurations for department-level logistics.

Who this is for

• Law enforcement officers: purpose-built for riot control deployments where prolonged CS, CN, or OC exposure is likely and standard-issue filters saturate quickly
• Emergency preparedness professionals: a 20-year sealed shelf life and 40 mm NATO thread compatibility make this a practical long-term stockpile filter for CBRN-trained responders
• Civilians with compatible 40 mm respirators: anyone requiring verified particulate and riot-agent filtration in a reusable, hydrophobic P3-rated canister

Compatibility with parent respirator

The P-CAN threads onto any respirator accepting standard STANAG 4155 (EN 148-1) Rd 40 x 1/7" threads — the most common interface on full-face gas masks sold worldwide. This covers the MIRA Safety CM-6M, CM-7M, and CM-I mask platforms, as well as the vast majority of 40 mm NATO-threaded civilian and military respirators.

The canister measures 111 mm (4.3 in) in diameter and 75 mm in height. Individual canisters are vacuum-sealed, black in color for straightforward inventory identification, and date-stamped on the label.

Filtration performance

The P-CAN carries an A2SXP3 D R rating. The A2 designation covers organic gases and vapors; SX targets law-enforcement riot control agents including OC, CR, and CS; P3 is the highest European particulate efficiency class, capturing both sodium chloride (S) and paraffin oil (L) aerosols at greater than 99.999% efficiency at a 95 l/min flow rate — exceeding the EN 14387 minimum of 99.95%.

The activated carbon charge measures 250 cm³ — nearly three times the 90 cm³ found in most competing filters. That additional carbon volume translates directly into longer service life before breakthrough. At sustained exposure levels typical of crowd-control operations, the filter delivers more than 12 hours of continuous protection.

Environmental performance

An embedded hydrophobic coating prevents water ingress during sustained heavy rainfall, so the filter functions reliably in rain, snow, and 100% relative humidity. Tested to perform at temperatures as low as -32°C, with rated high-temperature exposure up to 70°C (159°F). Humidity range is 5% to 100%. Salt-spray environments do not degrade the filter, though prolonged salt-breeze exposure limits service life to a 12–24 hour maximum for that session.

Breathing resistance

At a 30 l/min flow rate the P-CAN measures below 160 Pa — the EN 14387 requirement at that rate is 260 Pa. At the higher 95 l/min test rate the filter measures below 600 Pa against the standard's 980 Pa limit. Lower breathing resistance reduces fatigue during extended operational wear, which matters for officers maintaining communication and situational awareness over multi-hour deployments.

Specifications

Storage and end of service

Store canisters unopened in their sealed plastic bags in a clean area at 23–86°F (-5 to +30°C) with relative humidity below 80%. The storage period is marked on each label by month and year. Do not attempt to regenerate a used filter. Never clean with compressed air or compressed water. Once opened and used, discard the filter — even brief mask removal during a deployment requires replacement before re-entering the area.

After use, remove from the respirator and dispose of as solid waste in accordance with current waste-treatment regulations applicable to the substances filtered. Consult local authority guidelines for disposal locations.

Frequently asked questions

What respirators does the P-CAN fit?

It fits any mask with a standard 40 mm NATO thread (STANAG 4155 / EN 148-1 Rd 40 x 1/7"). This covers the vast majority of full-face military and civilian respirators, including all MIRA Safety mask platforms. If your mask uses a different thread standard (e.g., 60 mm GOST), the P-CAN is not compatible — contact us to confirm fitment before ordering.

How long does the P-CAN last once opened?

There is no fixed time limit after opening. Service life depends on contaminant concentration, atmospheric conditions, and breathing rate. The practical indicator is increased breathing resistance — when the filter becomes noticeably harder to breathe through, replace it. If you remove the mask at any point during active exposure, discard the filter immediately and install a fresh canister before re-entering.

Why does the P-CAN last longer than standard riot filters?

The activated carbon charge is 250 cm³ — nearly three times the 90 cm³ in most competing filters. More carbon means more adsorption capacity before breakthrough. Combined with the hydrophobic P3 layer, the filter maintains that capacity even in wet operational environments where standard filters often saturate faster than rated.

Can the P-CAN handle rain or humidity?

Yes. The embedded hydrophobic P3 filter prevents water ingress during sustained heavy rainfall and functions across the full 5%–100% relative humidity range. It has been tested at temperatures as low as -32°C. Salt-spray environments do not degrade the filter for normal use, though prolonged salt-breeze exposure caps service life at 12–24 hours for that session.

Does the P-CAN protect against chemical warfare agents, not just riot control agents?

No. The P-CAN is rated A2SXP3 — designed specifically for riot control agents (CS, CN, OC) and organic vapors at the A2 concentration level. It does not carry ratings for full CBRN threats such as inorganic gases, ammonia, nitrogen oxides, or radioactive iodine. For full CBRN protection, the MIRA Safety NBC-77 SOF filter is the appropriate choice.

How should used filters be disposed of?

Treat used canisters as special refuse and dispose of them as solid waste following current waste-treatment regulations for the substances filtered. Consult local authority guidelines or hazardous-waste disposal resources in your jurisdiction for approved disposal sites and procedures.