Crosstex™ Isofluid™ FogFree™ Earloop Mask Crosstex™ Isofluid™ FogFree™ Earloop Mask Sign in to save to your list GCICXB-HF ASTM LEVEL 1. Ideal for procedures where low amounts of fluid, spray and/or aerosols are produced. Blue, 50/box. Where to Buy Ask a specialist