Sterile, ready-to-use 500mL containers are molded in blue-tinted polycarbonate, providing safe storage from -100°C to 99°C. Closures feature a silicone rubber cap liner. They have printed graduations in mL. Space-saving square shape and ribbed hand-grips. Meets USP 87, 88 and are tested for pyrogenicity. See carboy category for larger sizes. 5/Shelf-Pack; 70/Case. Nalgene#: 3005-42.