MDARD Michigan Core Pesticide Applicator Practice Exam

Which type of particulate filter must be used when oil is present?

1. N-series

2. P-series

3. HEPA

4. Dust mask

The correct answer is: P-series

The P-series particulate filter is designed to be used in environments where oil aerosols are present. This is important because the P-series filters are made to resist degradation from exposure to oil-based particulates, ensuring they maintain their effectiveness in filtering airborne contaminants. In contrast, the N-series filters are not resistant to oil and would lose their filtering efficiency when exposed to oil aerosols. HEPA filters, while highly efficient at removing small particles, do not specifically address the oil presence requirement and are typically used in more controlled settings. A dust mask provides minimal protection and is not classified for use against specific types of airborne contaminants like oil. Therefore, the P-series is the appropriate choice for situations where oil is involved.