Chemical cartridge
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A respirator cartridge or gas mask canister is a type of filter that removes gases, volatile organic compounds, and other vapors from the air through adsorption, absorption, or chemisorption. It is on
Respirator cartridge (3M 6009) for protection against mercury vapor and chlorine. This cartridge has an indicator that progressively changes color (from yellow to black, 1-2-3-4) when it is exposed to mercury vapor.
Sensors for an end-of-service-life indicator (ESLI) developed in US
A powered air-purifying respirator is a type of respirator used to safeguard workers against contaminated air. PAPRs consist of a headgear-and-fan assembly that takes ambient air contaminated with one
A PAPR, gown, and biosafety cabinet in use in a BSL-3 laboratory. All parts of the PAPR are visible: the waist unit holding the fan, filter, and battery; the hose; and the mask, in this case a flexible, loose-fitting one.
This full-face mask has an inner orinasal mask to reduce dead space, and, since it is being used against asbestos, exhalation valves (white). The hose connects to a PAPR filter-pump.
Racal suits consist of a PAPR combined with a separate protective suit. They are used in healthcare settings, in this case by the U.S. Army Aeromedical Isolation Team at Fort Detrick, Maryland