Two Types of Respirators Chemical cartridge respirators have a partial face mask fitted with one or two replaceable cartridges. Cartridge respirators are effective against all but the most toxic vapors. They provide added protection when spraying toxic pesticides, using toxic chemicals in confined areas, or hand spraying certain crops. Powered-air purifiers may be preferred for excessively high concentrations of dusts or pesticides. The devices use the same filter materials mentioned above, but have a motor-blower assembly that forces air through the filter and into the breathing zone of the wearer.
Breathing is much easier because drawing air through the filter requires no effort.
Supplied-air respirators deliver air though a breathing tube connected to the wearer's facepiece, helmet or hood. Eye Protection Protective eyewear should be carefully selected, fitted and cleaned. When handling and applying chemicals, wear splash goggles or full face shields. Never wear contact lenses when handling ammonia or other farm chemicals. Water may be needed to irrigate chemical spills occurring in the eyes.