New York State Asbestos Investigator Practice Exam

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Which type of filter should be used in a respirator for asbestos?

P100; green color
P100; magenta color
N95; blue color
P50; red color

The correct answer is: P100; magenta color

The appropriate type of filter to be used in a respirator for asbestos is a P100 filter, which is designed to provide a high level of filtration efficiency for airborne particles, including asbestos fibers. The designation "P" indicates that it is resistant to oils, and the "100" means it is capable of filtering out at least 99.97% of airborne particles that are 0.3 microns in diameter or larger. Filters labeled as P100 typically come in a magenta color, which helps differentiate them from other types of respirator filters. This color coding is important for quick identification, ensuring that individuals using respirators can select the correct filter when dealing with hazardous materials like asbestos. The other options present filters that do not meet the necessary criteria for asbestos handling. N95 filters, for instance, while providing a level of filtration, do not have the same level of efficiency or oil resistance as P100 filters. Additionally, the colors associated with those other filters do not correspond to the recognized standards for asbestos filtering. The precise identification of filters through designated colors aids in maintaining safety compliance in environments where asbestos is present.