Indoor Air sciences CSMI Practice Exam

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Which NIOSH series respirators provide protection for oil-based particles and aerosols?

R and P
P
N
R

The correct answer is: R and P

The correct answer relates to respirators that are specifically designed to protect against oil-based aerosols and particles. The NIOSH classification system categorizes respirators based on their filtration capabilities and resistance to oil. Respirators classified as "R" (Respirator) are resistant to oil, providing a certain degree of protection against oil-based particles but are not as robust in this regard as "P" (Particulate) respirators, which are designed to be oil-proof. The "P" series respirators can be used in environments where oil-based aerosols are present and provide the highest level of protection against such particles. The combination of "R" and "P" in the answer signifies a broader level of protection since both types can be utilized in environments with oil-based debris. The "N" series lacks any resistance to oil, making it unsuitable for such applications. While "R" respirators can handle some oil exposure, specifying both "R" and "P" emphasizes the best practices for environments where oil-based aerosols are a concern. Thus, the inclusion of both types in the answer highlights the ability to ensure adequate respiratory protection in various settings involving oil-based particles.