China Half Face Respirator with Organic Vapor Cartridge, Find details about China Mask, Face Mask from Half Face Respirator with Organic Vapor Cartridge
1 | Low capacity | Pollutant concentration <0.1% or 1000ppm |
2 | Medium capacity | Pollutant concentration <0.5% or 5000ppm |
3 | High capacity | Pollutant concentration <1.0% or 10000ppm |
P1 | Low capacity (≥80%) | The thick& non-toxic particles,such as calcium carbonate |
P2 | Medium capacity (≥94%) | Dangerous or irritation of solid powder or liquid aerosol (such as silicon dioxide-SiO2, sodium carbonate-Na2CO) |
P3 | High capacity(≥99.95%) | Toxic solid powder or liquid aerosol (such as beryllium- radioactive dust) |
Type | Color code | Description |
A | Brown | Oragnic vapours and gases with boiling point 65ºC and above |
B | Grey | Inorganic vapours and gases (excluding carbon dioxide/monoxide) |
E | Yellow | Sulphur dioxide and other acidic vapours and gases |
K | Green | Ammonia and ammonia derivatives vapours and gases |
ABEK | Multiply gases | |
P | White | Dust / particles |
Type and class | Test gas | Minimum Breakthrough time at test condition(min) | Test gas concentration in air | Breakthrough concentration (ml/m3) | |
% by volume | mg/l | ||||
A1 | Cyclohexane (C6H12) | 70 | 0.1 | 3.5 | 10 |
B1 | Chlorine (Cl2) Hydrogen sulfide(H2S) Hydrogen cyanide(HCN) | 20 40 25 | 0.1 0.1 0.1 | 3.0 1.4 1.1 | 0.5 10 10 a |
E1 | Sulfur dioxide(SO2) | 20 | 0.1 | 2.7 | 5 |
K1 | Ammonia(NH3) | 50 | 0.1 | 0.7 | 25 |
A2 | Cyclohexane (C6H12) | 35 | 0.5 | 17.5 | 10 |
B2 | Chlorine (Cl2) Hydrogen sulfide(H2S) Hydrogen cyanide(HCN) | 20 40 25 | 0.5 0.5 0.5 | 15.0 7.1 5.6 | 0.5 10 10 a |
E2 | Sulfur dioxide(SO2) | 20 | 0.5 | 13.3 | 5 |
K2 | Ammonia(NH3) | 40 | 0.5 | 3.5 | 25 |
A3 | Cyclohexane (C6H12) | 65 | 0.8 | 28.0 | 10 |
B3 | Chlorine (Cl2) Hydrogen sulfide(H2S) Hydrogen cyanide(HCN) | 30 60 35 | 1.0 1.0 1.0 | 30.0 14.2 11.2 | 0.5 10 10 a |
E3 | Sulfur dioxide(SO2) | 30 | 1.0 | 26.6 | 5 |
K3 | Ammonia(NH3) | 60 | 1.0 | 7.0 | 25 |
a C2N2 may sometimes be present in the effluent air. The total concentration of (C2N2 + HCN) shall not exceed 10 ml/m3 at breakthrough |