3M Disposable Filtering Facepiece Respirators- หน้ากากกันแก๊ส 3m p100 niosh ,NIOSH-approved filters are rated as N95, R95, P95, N99, R99, P99, N100 (99.97%), R100 or P100. The number 95, 99, or 100 indicates the percent NIOSH filtration efficiency. 1. 3M recommended for relief against nuisance level acid gas or organic vapors. Nuisance levels are less than OSHA PEL or applicable government occupational exposure

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