Moldex 1511 1500 Series N95 Respirator and Surgical Mask, 20/Box Features: Meets CDC guidelines for protection against TB. NIOSH certified to have a filter efficiency of 95% or greater against non-oil based particulates. Highest ASTM level of fluid resistance on the market(160 mm Hg). Bacterial filter efficiency >99.9%. Available in 5 color coded sizes. Latex and PVC-Free. Dura-Mesh shell resists collapsing in regular use and even under hot and humid conditions. Contour molded nosebridge for extra comfort. Soft foam nose cushion for an easy and comfortable fit. Softspun inner lining is soft to the touch. Certified under 42CFR84. Meets heat and flame resistance in accordance with ANSI/ISEA 110-2003 Section 7.11.1.