Cyanogens chloride: not less than 50 minutes at 30 L/min.

1. 5mg/L, 80-80% RH conditions.

Hydrocyanic acid: not less than 50 minutes at 30L/min,3mg/L conditions.

2. Oil mist penetration coefficient: not more than 0.005% at 30L/min

3. Inhalation resistance: not more than 186 pa at 30L/min.

4. Exhalation resistance: not more than 100 pa at 30L/min.

5. Visual field: total ≮ 75°, binocular visual field ≮60°, Below visual field≮40°6. Storage life: more than 5 years.