Tristan Technologies was founded in 1991 by many people originally with several San Diego superconducting companies, including Biomagnetic Technologies (BTi) and S.H.E. Corporation. This company was subsequently sold to Conductus, Sunnyvale in 1993, and became its Instrument & Systems Division. This division in San Diego closed in July 1997, and many of the people reformed Tristan Technologies in August 1997. As part of the reformation, Tristan acquired from Conductus the rights to the iMAG® product line and associated product lines, and continues to manufacture the iMAG® series LTS and HTS SQUID systems as standard products and as parts of custom cryogenic measurement systems. Nearly half Tristan's staff have advanced technical degrees, with over a century of accumulated experience in superconducting technology. Tristan Technologies presently occupies a 7,000 square foot facility in the Sorrento Valley area of San Diego, over half of which is devoted to magnetometer fabrication. This location, near UCSD, provides easy access to unusual manufacturing techniques and outstanding engineering expertise. Tristan's strength is in the design and manufacture of laboratory and custom SQUID systems. Tristan's standard product line of SQUID instrumentation is the widest available for scientific laboratory applications. Custom SQUID magnetometers supplied by Tristan include the first commercial high temperature SQUID magnetometer and gradiometer, liquid helium scanning SQUID microscopes with 2 micron resolution (the world's first magnetic microscope) and 100+ channel biomagnetometers for medical applications.