P-A-3 filter element

      The filter consists of the cylindrical iron shell and high-quality and high-adsorption activated carbon inside, with a standard universal thread of M40*4 with interchangeability, and brown labels. It is mainly used to provide defense against organic gases and vapors: benzene and its homologues, chlorine, acetone, alcohols, aniline, carbon disulfide, carbon tetrachloride, chloroform, methyl bromide, methyl chloride, nitroalkane, chloropicrin, dichloromethane, ethyl chloride, cyclohexane, phenylethane, trichloroethylene, phenol.

Technical requirements:

Ventilation resistance: ≤ 200 (30 L/min) ≤ 770 (95 L/min)

Dust discharge capacity of filter: Type-A filter is ≤ 0.24 mg

Sealing: no bubbles should escape within 1 min under the pressure of (15±2) KPa.

Protective time for benzene (C6H6): ≥ 115 min (test gas concentration 16.2 mg/L)

      The protective time is inversely proportional to the concentration of toxic agent. The higher the concentration, the shorter the effective protective time.

      This type of filter must be used in conjunction with the full face mask through the breathing hose.