What are external thread cryogenic vials used for?

A: External thread cryogenic vials, also known as cryotubes, are specifically designed for the long-term storage of biological samples at extremely low temperatures, typically in the vapor phase of liquid nitrogen (-196°C). They are commonly used to preserve cells, tissues, DNA, RNA, proteins, and other biological materials in research labs, biobanks, and clinical settings. The external thread helps to minimize contamination.

Are cryogenic vials leakproof at -196°C?

A: High-quality cryogenic vials, especially those with an external thread and a well-designed cap, are engineered to be leakproof even at the extremely low temperatures of liquid nitrogen vapor phase storage (-196°C). Reputable manufacturers perform rigorous testing to ensure the integrity of the seal. Look for vials made from medical-grade polypropylene.