Name of Mask: Hongkai Windproof Self-Filtered Gas Mask

Function: This mask is a filtering gas mask suitable for workers in industrial, agricultural, and research institutions who are exposed to organic vapors, benzene and its derivatives, gasoline, acetone, carbon disulfide, ether, etc.

1. Structural features:

It is composed of four parts: the main body, the filter box, the exhale valve, and the straps. The main body is designed according to Chinese facial shapes, while the straps can be adjusted in tightness as needed. The mask features excellent density performance, making it safe and comfortable to wear.

2. Technical Instructions

1. Total mask quantity          (grams)      >250

2. Expiratory resistance           (Pa)      <490

3. Inhalation resistance           (Pa)      <780

4. Poisoning Prevention Time          (minutes)      >50

5. Air leakage coefficient            (%)       < 5

6. Harmful space           (centimeters)   <170

7. Field of view ______ degrees >35

3. Scope of Use

1. The usage conditions for this mask are: the concentration of toxic gases in the environment should not exceed 0.1%, the volume concentration of oxygen in the air should be at least 18%, and the ambient temperature should range from -30°C to -45°C.

2. This mask cannot be used in working environments with sealed containers such as tanks, and is also not suitable for use in other toxic gas environments.

3. Before using the mask, check whether all components are intact, whether the exhale and inhale valves are sealed, whether the filter box fits tightly to the main body, and whether the filter material inside the filter box is loose.