Established in 2000, Bay Instruments, LLC builds and supplies membrane inlet mass spectrometers for rapid, high-precision measurement of dissolved gases in environmental water. Its niche is the N2/Ar method used in aquatic denitrification research, backed by more than 30 years of MIMS expertise and instruments operating at universities and research facilities in 14 countries. The company also adapts its systems for applications such as photosynthesis and trace-gas analysis while providing specialized inlets and hands-on application assistance.
Semi S2
UL/CSA
UL
Quality certification
CSA
Quality certification
Brightwaters Instrument CorporationFounded in 1990, Brightwaters Instrument Corporation builds custom and semicustom scientific and oceanographic equipment, including autonomous drifting buoys, and provides OEM design and manufacturing services. The privately held New York company specializes in systems that combine environmental sensing with GPS and satellite telemetry, serving government, university, and private-sector research programs. Its support extends beyond delivery with around-the-clock field assistance, equipment repair, and refurbishment for instruments used at sea.BRIGHTWATERS, NY
Surface Measurement SystemsFounded in 1991 around Prof. Daryl Williams’ invention of Dynamic Vapor Sorption, Surface Measurement Systems designs scientific instruments and provides contract services for characterizing how solid materials interact with moisture, vapors and gases. The company delivered its first DVS analyzer to Pfizer in 1992 and later pioneered commercial Inverse Gas Chromatography, building a global business serving materials researchers from pharmaceuticals to porous materials and carbon capture. Its instruments and laboratory services are supported by ISO 9001:2015 and ISO 45001:2018 certifications.334516ALLENTOWN, PA
Apera Instruments, LLCSince 1991, Apera Instruments has designed and manufactured electrochemical sensors and meters that help users measure water quality, with its specialty extending from pocket testers to laboratory instruments. The company makes key components in-house, particularly its electrodes, and operates an ISO 9001:2015-certified manufacturing facility; its products are used in more than 60 countries. Apera serves everyone from researchers to hobbyist growers, including with instruments tailored to challenging samples such as pure water, viscous liquids, and high-salinity solutions.COLUMBUS, OH
Bridge Analyzers, IncBridge Analyzers, Inc., founded by engineers and industry experts, designs and manufactures application-specific gas and fluid analyzers in the United States. Its instruments serve settings from automotive exhaust testing to modified-atmosphere food packaging, with configurable systems and OEM integration for specialized applications. The company has delivered thousands of instruments worldwide over more than two decades and supports them with U.S.-based technical service, calibration, and application consulting.BEDFORD HEIGHTS, OH