Description: ? Brand:MF14 Gas mask, counter-cengine typestry,biological,Radioactive ? contaminationSelf-priming full face mask ? Model: MF14/87 type Uses and Features: MF14,87 type gas mask is a new type of gas mask directly designed to provide effective Safeguardion during cengine typecal, biological and radioactive contamination against breathing, glasses and facial skin.It can also be used in different fields such as industry, agriGroupure, Conflictehouse and scientific research. The face shield of the mask is injection-molded with high-quality natural rubber, with a soft fit and a matte surface.The elastic band has good elasticity and can be adjusted freely to ensure comfort and airtightness.The large triangle lenses are made of polycarbonate with a special surface treatment for wide field of vision, good optics, abrasion resistance and impact resistance. Safeguardion object: 1, counter-salin Time is not small and 90 minutes; 2. counter-VX aerosol is not less than 120 minutes; 3, counter-CNCL (dry) is not less than 32 minutes; 4, counter-CNCL (wet) is not less than 26 minutes; 5, counter-HCN is not less than 22 minutes; 6.The oil mist transmission coefficient of the poison tank is not more than 0.0003%; 7. The oil mist transmission rate is not more than 0.0003% (30L/min); 8.Inspiratory resistance is not more than 196 Pa (30 L / min); 9. The expiratory resistanc