Don’t use in the environment where the oxygen concentration is unknown or less than 19.5%, or the concentration of toxic gas is unknown, or severall kinds of toxic gas with different properties or vapor is mixed.
Only use these respirators when the materials in the air are defined, and the correct filter and cartridges are equipped.
Do not use in protection against anthrax inhalation, poison gas, chemical bombs, fire-escaping or smoke suffocation.
Fitness may be affected by a user’s beard or glasses.
Failure to follow the instructions may cause serious damage to health. Only use these respirator when correct filters/cartridges are used and further safety equipments are applied.
