Cincinnati Sub-Zero (CSZ) manufactures standard and custom environmental test chambers, including temperature/humidity, thermal shock, stability, altitude, vibration, HALT/HASS, walk-in/drive-in, and battery test chambers. It also manufactures industrial freezers and ovens, provides metal fabrication and powder-coating services, and serves aerospace, defense, automotive, electronics, medical, pharmaceutical, energy, telecommunications, and industrial markets.
ISO 9001:2015
A2LA Accredited Calibration
NIST Traceable Calibration
Compliance program
Cincinnati Sub-Zero (CSZ)Founded in 1940 as an industrial-freezer supplier, Cincinnati Sub-Zero now manufactures standard and custom environmental test chambers that simulate demanding conditions so products can be tested for reliability. The Cincinnati company is known for its long experience in environmental simulation, its custom-engineered systems, and its patented Tundra® refrigeration technology. CSZ also fabricates and powder-coats metal parts for other manufacturers and operates as part of the Weiss Technik North America family.CINCINNATI, OH
Singleton CorporationFounded in Cleveland in 1947 by Albert Singleton, Singleton Corporation designs and manufactures environmental testing chambers and metal-finishing equipment. Its chambers recreate corrosive, dusty, and immersion conditions for product testing, while its patented Maxi™ plating barrels are designed to increase capacity within existing tank systems. The company also supports its equipment with factory service, calibration, setup, and training for customers worldwide.CLEVELAND, OH
So-Low Environmental Equipment CoFrom a Cincinnati home garage in 1959, So-Low Environmental Equipment Co. has grown into an American manufacturer of ultra-low-temperature freezers and medical-grade laboratory refrigeration equipment. Its Cincinnati factory serves research, medical and industrial organizations with U.S.-made cold-storage systems, including specialized units for flammable materials and hazardous locations. So-Low also emphasizes personal support, with live customer service and in-house parts and service assistance throughout a freezer’s life cycle.CINCINNATI, OH
Temperature Testing TechnologiesVeteran-owned and service-disabled veteran-owned, Temperature Testing Technologies is a Pennsylvania company founded by a U.S. Army veteran and built around direct, accountable customer support. It designs custom environmental simulation chambers for demanding testing programs, particularly in aerospace and defense, while servicing equipment from any manufacturer.GLENMOORE, PA