... protective functions against various toxic smoke, toxic fog, toxic gas, germs, radioactive dust and particle gasoloid with advantages of ... arsine, carbonyl chloride, diphosgene, larvacide, benzene, celfume, carrene, mustard gas, phosphine, etc.Suitable Conditions: Oxygen content is not less than ... 18%, density of toxic gas less than 2%.leakage coefficient(%): <0.005 at 30 1 L/ ...