Half-mask

Is used for breathing protection together with a filter cartridge (connector is according to EN 148-1/2000 - 40x1/7"), adequate for a certain noxious and their concentration is the work ambient against the dangerous action of powder, chemical gases, vapors, drops and aerosols who have a toxicity from medium to high. Cartridge weight should not exceed 300g.
Use in environments without oxygen deficiency (minimum 17% oxygen in air breathing).