Whitman Controls is a veteran-owned small business with more than 50 years of engineering, fabrication, and customer-service experience at its Bristol, Connecticut manufacturing facility. It is known for building tailored instrumentation for OEMs and industrial users, including specialized equipment for high-purity semiconductor applications. The company maintains ISO 9001:2015 certification and makes its parts in the USA.
ISO 9001:2015 Certified
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REACH
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RoHS
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CE
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UL
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Service-Disabled Veteran-Owned Small Business
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Process TechnologyFounded by Tom Richards in 1978, Willoughby-based Process Technology designs and manufactures industrial heating, power-supply and process-control equipment, with a particular focus on ultra-high-purity systems for semiconductor and wafer processing. Its cleanroom assembly and custom engineering work support demanding applications in surface finishing and other industrial markets, while the 2025 acquisition of Kepco expanded its power-supply capabilities. Process Technology’s design, production and distribution operations are ISO 9001:2015 certified with design certification.WILLOUGHBY, OH
Brooks InstrumentFounded in 1946 as a single instrumentation company, Brooks Instrument has built its identity around precision process measurement and control. Its instruments serve demanding manufacturing and laboratory applications, with a particularly large installed base of mass flow controllers and global support for customers in fields such as semiconductor production.334513HATFIELD, PA
High Purity Technology, IncSince 1983, High Purity Technology has supplied semiconductor OEMs and end users with ultra-high-purity tubing and fittings, along with the cleaning and finishing services those critical systems require. Based in New York’s Hudson River Valley, the company also serves as the primary distributor of SciMax UHP tubing and fittings throughout the Americas as a member of the Neumo Ehrenberg Group. Its on-site ISO 5 Class 100 cleanroom supports oxygen-service preparation, inspection, packaging, and certification.LAKE KATRINE, NY
Athena ControlsSince 1965, Athena Controls has designed and manufactured digital and analog temperature and process-control instrumentation in Plymouth Meeting, Pennsylvania. Its controls are made in the USA for applications ranging from plastics processing to food-service equipment, with custom hardware and software developed for OEM customers alongside ready-to-ship products. Athena also distinguishes itself through application guidance and technical support for upgrading legacy equipment and solving specialized control problems.PLYMOUTH MEETING, PA