When oil may be present, which particulate filter must be used?

When oil may be present, which particulate filter must be used?

• A. P-Series
• B. N-Series
• C. HEPA
• D. R-Series

Answer: (A)

When oil may be present, you need a filter that can resist oil aerosols. Filters in the P-series are designed to be oil-proof, so they maintain their filtration efficiency even in the presence of oil contaminants. N-series filters are not oil resistant and can become ineffective when oil is present. R-series filters are oil-resistant but not oil-proof and are intended for limited use; they don’t provide the same level of protection as oil-proof options when oil exposure is possible. So the choice that ensures protection in oily conditions is the P-series.

When oil may be present, you need a filter that can resist oil aerosols. Filters in the P-series are designed to be oil-proof, so they maintain their filtration efficiency even in the presence of oil contaminants. N-series filters are not oil resistant and can become ineffective when oil is present. R-series filters are oil-resistant but not oil-proof and are intended for limited use; they don’t provide the same level of protection as oil-proof options when oil exposure is possible. So the choice that ensures protection in oily conditions is the P-series.