Cryoking 0.5ml Clear Polypropylene Sterile Cryovials With External Thread And Colored Caps Assembled.  Cryovials Have Writing Patch And Marked Graduations.  (Comes With 2 Free Cryoking Cryoboxes.) 25 Cryovials/Bag, 20 Bags/Pack, 2 Packs/Case, Price/Case

Cryovials can withstand temperatures from -196°C to 121°C, making it suitable for both liquid nitrogen freezing and autoclaves. These can be repeatedly frozen and thawed, and are also DNase, RNase, endotoxin, and foreign DNA free. The Cryovials also include graduations for quick measurement of samples. These cryovials are made of medical grade polypropylene, making it durable to use and long-lasting. Sterile Polypropylene Cryovials are manufactured by CryoKing and are shipped by FedEx.