Oosafe® 4 Well DishOosafe 4 Well Dish Oosafe high end plasticware is approved by scientists but you dont have to take their word for it. Quality testing of each lot ensures that Oosafe dishes meet a high standard every time. Features Made of Medical Grade USP VI Tested Raw Materials: Polystyrene One cell Mouse Embryo Assay Tested (MEA 80 % Blastocyst) Non pyrogenic: Endotoxin Tested (LAL 0. 03 EU mL) Human Sperm Survival and Motility Tested (SMI 0. 75) Clear Microscope