Founded in 1994, Ronkonkoma-based GEO Calibration designs and manufactures temperature and humidity calibration chambers, generators, and instrumentation for laboratories and manufacturers worldwide. Under CEO/CTO Kamal Mahajan, the company launched its portable humidity generator line in 2003 and continues to build custom engineering and systems-integration solutions for demanding calibration workflows. GEO also offers a three-year unlimited warranty program tied to annual ISO/IEC 17025 calibrations.
ISO/IEC 17025
ISO17025
Quality certification
Wisco Calibration Services IncFounded in 1970 as Westinghouse Instrument Service Co., Pittsburgh’s Wisco Calibration Services calibrates, tests, and repairs precision instruments while also designing and building custom control panels. Now privately held by the Homewood Group, Wisco has retained the management team and staff from its Westinghouse years and supports industrial, defense, energy, and nuclear applications from environmentally controlled laboratories. Its calibration work is conducted under quality systems aligned with ASME NQA-1 and ISO/IEC 17025:2017.334417PITTSBURGH, PA
TranscatFounded in 1964 as a manufacturer of industrial calibration tools, Transcat now provides accredited calibration, compliance and asset-management services alongside test-and-measurement equipment distribution and rentals. Its network of more than 25 calibration laboratories across North America and Ireland supports regulated operations with in-lab, onsite and specialized services, including aviation ground-power-unit certification and pipette calibration. The company also serves as an authorized distributor for more than 500 manufacturers.ROCHESTER, NY
JULABO USATracing its roots to a 1926 German glass-thermometer invention, JULABO USA manufactures and supplies liquid temperature-control equipment for scientific laboratories and industry. Founded in the U.S. in 1993 and led by third-generation family member Ralph Juchheim, the company pairs precise equipment with installation, calibration, repair and application support. Its quality management system is certified to ISO 9001:2015.ALLENTOWN, PA
GeoCorpSince 1989, GeoCorp has manufactured thermocouples and thermocouple wire in Huron, Ohio, supplying temperature-measurement products directly from its own operation. The company grew into wire production with the purchase of its first braider in 1999 and now operates more than 95 braiders. Its in-house quality-control laboratory is accredited to ISO/IEC 17025 by NVLAP, lab code 200496-0, and GeoCorp offers custom thermocouple configurations for demanding industrial applications.HURON, OH