Head harness type mask with lightweight canister
not less than 50 minutes at 30L /min, 1.5 mg/L, 80-80% RH conditions.Hydrocyanic acid: not less than 50 minutes at 30L /min, 3mg/L conditions.
2. Oil mist penetration coefficient: ont more than 0.005% at 30 L/min.
3. Inhalation resistance: not more than 186pa at 30 L/min.
4. Exhalation resistance: not more than 100pa at 30 L/min.
5. Visual field: total not less than 75%, binocular visual field not less than 30%.
6. Weight: complete set of mask app.700 grams.
7. Storage life: more than 8years.