Introducing the Nalge Nunc Cryogenic Vials, designed for optimal storage of biological samples at ultra-low temperatures. Made from durable polypropylene, these vials are both sterile and reliable, ensuring the integrity of your samples. The external thread and secure screw cap provide a leak-proof seal, making them perfect for cryogenic applications. Each vial is engineered for easy labeling and handling, allowing for efficient organization in your lab. With a capacity of 2.0 mL, these vials are ideal for storing cells, tissues, and other sensitive materials. Trust Nalge Nunc for your cryogenic storage needs!