![]() This way, a gas mask filter cartridge against organic and inorganic gas and vapor, acids and ammonia – and its derivatives – will be labeled ABEK with a color code brown, grey, yellow, green. Some respirator filter cartridges can combine simultaneously several gases. Nitric oxide, nitrogen oxide, nitrous vapor Inorganic gases and vapours such as chlorine, hydrogen sulphide or hydrocyanic acid) Gases and vapours of organic compounds with a boiling point below 65☌ such as methanol, chloroform or perchloroethylene Organic gases and vapours (solvents) with boiling points above 65☌ such as white spirit, styrene or xylene ![]() In addition to the three efficiency levels, there is a specific codification composed by letters and colors for different types of toxic gas and substances. These gas mask filters feature a microporous structure made of active carbon with tiny capillaries for an enhanced purifying efficiency while reducing the breathing effort.Īs for particle filters, they are gathered into 3 efficiency classes, ensuring a purifying level (3 being the maximum protection level). Gas filters for APR respirators are especially designed to get protected against toxic substances. This breathing disturbance will determine the replacement. In a dusty environment, particulates filter will progressively clog and offer a higher and higher breathing resistance – without affecting the purifying power. Because of their hydrophobic characteristic they are water resistant and stop the thinnest particles. Particle filters for air purifying respirators (PAPR) feature a large parallel pleated purifying surface which avoid clogging risks in very dusty environments. The most effective protection is class P3 (filtration rate of 99.97%), which should be used as often as possible against tiny dust such as asbestos (level 1), ceramic fibres, and viruses (avian flu, H1N1 flu, coronavirus, etc.) and bacteria. ![]() They are gathered into 3 efficiency classes (P1, P2 or P3) that ensure a purifying level from 80% to 99.97%. Particle respiratory protection filters – also known as aerosol gas mask filters – are mainly used to protect users against dusts, particles, liquid and solid aerosols according to the EN143 standard. Sort By Set Descending Direction P3 respiratory protection filters (against dust) ![]()
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