Respiratory protection

摘要

Fit tests ensure a respirator is properly fitted to an individual. According to OSHA 29CFR 1910.134(f), fit tests must be performed at least once a year, or more often if required by a substance specific standard. There are two basic types of fit tests-qualitative and quantitative. The tests most commonly used have been scientifically validated to be good tests to evaluate the adequacy of respirator fit. Qualitative fit test kits are not prohibitively expensive (usually $100-8200) and can be easily performed in the field, but are based only on a subjective response provided by the person being tested. Quantitative fit test equipment is much more expensive (usually $4,000-$10,000), can be used in most but not all field environments, and provides an indication of respirator fit that does not rely on subjective responses.