Shop › Medsup Level 1 Procedure Masks Image 1 of 1 Medsup Level 1 Procedure Masks CA$5.50 – 50 masks per box– ASTM Level-1 Certified– Materials: Non-woven fabric– Comfortable Earloop– Fluid Resistant Quantity: Add To Cart Added! – 50 masks per box– ASTM Level-1 Certified– Materials: Non-woven fabric– Comfortable Earloop– Fluid Resistant