However, this M40 APR limitation can be overcome– enabling soldiers to effectively work without fatigue for 8-hour shifts in the Warm Zone–by upgrading the M40 mask to a positive pressure Powered Air Purifying Respirator (PAPR). The upgrade is accomplished by adding IRT’s CBRN CAP I C420 blower to the M40 mask, providing positive pressure by blowing fresh, clean, filtered air into the soldier’s face. The C420 Powered Air Purifying Respirator (PAPR) is the most popular military and First Responder PAPR system in the world, and is employed in military, tactical, aviation, and industrial applications. The positive-pressure PAPR reduces fatigue, improves endurance, and provides maximum protection against Toxic Industrial Chemicals as well as CBRN protection against wartime gases/liquids.
The IRT CBRN CAP I C420 PAPR system provides breathing protection in compliance with NIOSH certifications for PAPRs in environments below Immediately Dangerous to Life or Health (IDLH) levels, and protects the face, eyes, and gastrointestinal tract against known chemical, biological, radiological, and nuclear hazards in aerosol, liquid, and vapor form including Nerve, Blister, Blood, and Riot Control agents.
The IRT CBRN CAP I C420 PAPR system also protects against Toxic Industrial Chemicals (TICs) such as chlorine, hydrogen sulfide, sulfur oxide, formaldehyde, nitrogen dioxide, phosgene, phosphine, and ammonia.
The IRT C420 PAPR system filters contaminants from ambient air and provides a constant, filtered airflow between 115 and 140 liters per minute to the user’s Facepiece providing an exceptionally high safety factor due to positive pressure in the mask.
The cooling effect of constant filtered airflow into the Facepiece provides a high degree of user comfort, extends operational endurance, and facilitates heavier work performance, even after extended wearer times in humid, heated and highly stressful conditions. The airflow prevents fogging in the Facepiece and drastically reduces feelings of claustrophobia.
Ground by the U.S. Army, featuring live agent concentration levels greatly in excess of PAPR IDLH levels resulted in non-detect readings for live agent permeation of the IRT C420 blower.