Company Profile

JanisULT was formed by Bill Shields in 1961, and for over 60 years has been providing the scientific and technical community with the highest-quality cryogenic equipment for research, characterization, and industrial applications.
In August 2020, the company announced a formal change in company name to JanisULT (a trading name of American ULT Cryogenics, LLC) following the successful sale of their laboratory cryogenics business - see the acquirer's press-release for more details.
JanisULT remains a private employee-owned entity and will continue to operate from their headquarters in Woburn, MA. USA with a renewed focus on ultra-low temperature solutions based on helium-3 and dilution refrigerators.

Over the years, our family of customers has grown to include some of the world's largest corporations and best-known research centers and institutions. The reasons for this record of success are simple: precision engineering and quality manufacturing; ease-of-operation; day-after-day reliability and performance; and a level of service and support unmatched in the industry.

JanisULT recognizes that obtaining an ultra-low temperature cryogenic system represents a long-term commitment for most scientists; therefore, we are devoted to providing you with the highest level of quality and customer support.  Just a few of the ways we accomplish this are:

  • Sales and service are provided through a worldwide network of trained and knowledgeable representatives.
  • A dedicated JanisULT sales engineer is responsible for each system from conceptual design through post-installation support.
  • A stable workforce draws on decades of combined service, and applies this experience to the assembly of each cryogenic system.
  • Customer approval of the final design drawing is obtained for all customized systems.
  • Records on all systems, modifications and design improvements are meticulously maintained for the reference of any future user.
  • Turnkey systems are supplied by offering a full line of cryogenic accessories.
  • Each system is fully integrated and tested before shipping.