ChemStat 929 Plus
Transparent Facemask Fabric (Reusable Nosebridge)
ChemStat 929 Plus is designed to prevent your most important equipment from overheating – your people.
ChemStat 929 Plus is a transparent face mask material so sheer workers can read lips through it. Facial features are easily recognized. The pressure differential is zero, so that speaking and hearing are unimpaired. Noxious elements of a worker’s breath that would cause discomfort over long periods are not retained. Even with a micron rating lower than that of a facial hair or skin flake, it lets people breathe freely.
Like other ChemStat fabrics, ChemStat 929 Plus is 100% polyester and is therefore universally laundered and sterilized, including gamma radiation.
The upgrade to ChemStat 929 Plus incorporates a 45% reduction in pore size for greater filtration effectiveness.
The ChemStat 929 Plus upgrade is accompanied by a reusable nosebridge, designated as ChemStat 929NB. The laminated metallic strip rests inside the top seam of a face mask, allowing it to conform to any nose shape. It magically returns to its original straight configuration when laundered. Even more magically, it reduces particle counts by as much as 65%.
Technical Data
Construction plain weave Weight (ASTM D 3776) 0.5 oz/yd2 (50 g/m2) Yarn Content 100% filament polyester Flame Retardance exceeds minimum requirements Durability (ASTM D 4157) 15,000 cycles no noticeable wear Permeability (ASTM D 737) 350 cfm (1070 L/dm2/min) Mean Pore Size (ASTM F 902) 20 microns Chemical Resistance same as ChemStat 909 Plus Series Laundry Compatibility DI water, perchlorethylene, Freon TF Sterilization Compatibility steam autoclave
gamma radiation (250 Mrad)Optical Rating (ASTM E 284) transparent Vapor Absorption none
