Isolite® Face Mask Minimum Performance Facial tissue outer layer with white, facial tissue inner layer. Extra long, aluminum nose piece. REF# GCLBL 50/BOX BLUE   REF# GCLPK 50/BOX PINK   • BFE=98% @ 3 Microns • PFE=98.7% @ 4.2 Microns • Outer facial tissue layer • White facial tissue inner layer • Extra-long aluminum nose piece Product Name: Isolite® Face Mask Latex: No CE: Yes Made in USA: Yes Worth Knowing: Select the best mask for the task! Crosstex masks meet Low (Primary), Moderate and High ASTM* performance classifications, based on: fluid resistance, filtration value, breathability and flammability. *The American Society for Testing and Materials