... to wear CE approved Full face fire escape hood respirator Main Technical Specification:1. Comply with the ... eqv En403:1993=15/ 30/ 60min, poison gas and smoke protecting, fireproof, hot-radiation protecting, good sealing property, ... of protection: Carbon monoxide (CO),hydrocyanic acid(HCN), poison smoke and fog, etc. 3. Mist permeability coefficient<5%, ... used again Full face fire escape hood respirator