Which considerations determine whether a P100 or N95 respirator is appropriate?

Which considerations determine whether a P100 or N95 respirator is appropriate?

• A. Contaminant type and concentration; presence of oil aerosols; required protection factor
• B. The color of the respirator
• C. Compatibility with PPE
• D. Time since last calibration

Answer: (A)

The choice between a P100 and an N95 rests on what you’re filtering and how much protection you need. An N95 is designed for non-oil particulates and filters about 95% of such aerosols, which is appropriate for many dry, non-oily dusts when the exposure isn’t extreme. A P100, on the other hand, is oil-proof and filters a higher percentage of particles (including oil-containing aerosols), making it the better pick when oils are present or when a higher level of filtration is required. The required protection factor—how much protection is needed for the task—also influences the decision: higher exposure or tighter seals demand the stronger, oil-resistant filtration of a P100. Other factors like the respirator’s color aren’t relevant to its filtration capability, and while overall compatibility with other PPE matters for a safe setup, it doesn’t determine whether a P100 or N95 is appropriate. Time since last calibration isn’t a factor for selecting the respirator type.

The choice between a P100 and an N95 rests on what you’re filtering and how much protection you need. An N95 is designed for non-oil particulates and filters about 95% of such aerosols, which is appropriate for many dry, non-oily dusts when the exposure isn’t extreme. A P100, on the other hand, is oil-proof and filters a higher percentage of particles (including oil-containing aerosols), making it the better pick when oils are present or when a higher level of filtration is required. The required protection factor—how much protection is needed for the task—also influences the decision: higher exposure or tighter seals demand the stronger, oil-resistant filtration of a P100.

Other factors like the respirator’s color aren’t relevant to its filtration capability, and while overall compatibility with other PPE matters for a safe setup, it doesn’t determine whether a P100 or N95 is appropriate. Time since last calibration isn’t a factor for selecting the respirator type.