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Experts told us you should only purchase N95s listed on NIOSH’s list of approved models — they’ve undergone specific testing to meet NIOSH’s performance and quality requirements, among those a check on ensuring they filter out at least 95 percent of very small particles (0.3 microns in size). There are also some specific features to look for in an N95 including: Appropriate markings indicating that it’s NIOSH approved, including identifying information verified using NIOSH’s Certified Equipment List Two straps that go around your head An adjustable wire nose bridge.
