P-B-3 filter element

      The filter consists of the cylindrical iron shell and activated carbon-catalyst impregnated with different chemicals inside, with a standard universal thread of M40*4 with interchangeability, and gray labels. The filter provides comprehensive defense against toxic gas, mainly including hydrocyanic acid, cyanogen chloride, hydrogen arsenide, phosgene, diphosgene, chloropicrin, benzene, methyl bromide, dichloromethane, Lewis gas, mustard gas and phosphine.

Technical requirements:

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

Dust discharge capacity of filter: Type-B filter ≤ 0.12 mg

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

Protective time for cyanogen chloride (CNCl): ≥ 50 min (test gas concentration 3.0 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.