The XT Series Extended Time Dewars are purpose-built for long-term cryogenic storage, offering superior performance and peace of mind. Constructed with a high-strength ribbed aluminum body and magneformed necktube, these dewars are built to withstand tough conditions while maintaining structural integrity. Advanced super insulation technology ensures exceptional vacuum performance and extended holding times. With a flexible internal storage system and a lockable lid for sample safety, the XT Series is the trusted choice for laboratories and research institutions requiring dependable, long-duration cryogenic storage.