This filter is designed to protect the end user from every known threat. The filter type category is A2B2E2K2P3 which protects against:
A (Brown) Organic gases and vapours with boiling point greater than 65 degrees C (maximum 5000ppm permissible concentration)
B (Grey) Inorganic gases and vapours, e.h. chlorine, hydrogen sulphide, hydrogen cyanide, but not carbon monoxide. (maximum 5000ppm permissible concentration)
E (Yellow) Sulphur dioxide, hydrogen chloride and other acid gases (maximum 5000ppm permissible concentration)
K (Green) Ammonia and organic ammonia derivatives (maximum 5000ppm permissible concentration)
Hg-P3 (Red/White) Mercury
The performance of this filter complies with EN 141, 143, and 371 as well as other regulations.
|Filter Type||40mm NATO (Standard) CERTIFIED|
|Country of Origin||United States|
|Drinking Tube Attachment||No|
They will protect you but they are overpriced. They come quick in the mail so that's a plus.
Just ordered 4 filters I honestly hope I wasted my money for my wife and I. Package came in 2days. Thanks Keepshooting :)