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10. PERSONAL PROTECTIVE EQUIPMENT Respiratory protection The most important way to prevent impurities from spreading in the air at the workplace is to use local exhaust. Respiratory protective equipment is divided into two categories: respirators with filters and breathing apparatus (isolating protective equipment). Respirators can have dust filters, gas filters, or combined filters. When using a respirator with a filter, the oxygen content in the air should not be lower than 19 percent. Use a half mask with a dust filter if the impurities in the air are particles (aerosols, welding fumes and dusts from different materials). The protection class of the filter is chosen based on the size of the particles and their dangerous nature. A particulate filter doesn’t filter gases! Note! Put on the particulate filter and adjust it to fit your face properly. Wear throughout the entire exposure time. Particulate filter 45


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