The 3M 5P71 P95 Particulate Filter offers simplicity and ease of use while helping to provide reliable worker protection against certain oil and non-oil containing aerosols. It passes NIOSH testing criteria providing a minimum filter efficiency of 95%.* Meets NIOSH 42 CFR 84 P95 requirements.* P-series filter features Advanced Electret Media (AEM), appropriate for both oil and non-oil containing environments with extended time-use limitations. Comfort and versatility. Advanced electrostatically charged microfibers allow for a low-profile design and easier breathing filter. The 5P71 filters are for use on 3M? 5000 Series Respirators and 6000 Series Cartridges with 501 Filter Retainers. *Minimum 95% filter efficiency when subjected to a 0.3?m MMAD DOP particle challenge. Filter performance will be greater against larger or smaller sized particles. Sold in box of 10.