"ISOLATOR-PLUS" NIOSH APPROVED N95 RESPIRATOR MEETS GUIDELINES FOR TB EXPOSURE CONTROL. RESISTANCE TO PENETRATION BY SYNTHETIC BLOOD - 160mmHg PFE = 99.9% @ 0.1 MICRON BFE = 99.9% @ 3.1 MICRON MALLEABLE NOSE AND CHIN PIECES, INNER AND OUTER FLUID RESISTANT LAYERS. BLUE/WHITE STRIP 28/BOX (WILL WORK AGAINST H1N1 SWINE FLU)