Founded in 1991, Norristown-based Stony Brook Scientific, Ltd. manufactures falling-needle viscometers and related scientific instruments for measuring viscosity and other fluid properties. Its instruments are used in research and quality control across industries and universities worldwide, with falling-needle systems adopted as standards by ASTM 5478-98 and SAE AIR 5704.
ASTM D 5478
compliance_program
SAE AIR 5704
compliance_program
Cannon Instrument CompanySince 1938, Cannon Instrument Company has carried the name of a Penn State research breakthrough into a specialized Central Pennsylvania manufacturing business. Founded by scientist, inventor, and educator Dr. Michael R. Cannon, the company is best known for developing the Cannon-Fenske Routine Viscometer, whose design became the world’s most widely used manual glass viscometer. Today, Cannon serves laboratory customers with testing instruments and related calibration services, supported by ISO 9001:2015 certification and A2LA accreditation.STATE COLLEGE, PA
Koehler Instrument Company, IncKoehler Instrument Company has made laboratory testing equipment since 1925, with a longstanding specialty in petroleum-related testing. From its New York operations, the company supports research and testing laboratories with instruments, technical expertise, and service for standardized laboratory methods.BOHEMIA, NY
Kessler Thermometer and Chase InstrumentFamily-owned and operated since 1934, Kessler Thermometer and Chase Instrument manufactures precision thermometers and hydrometers in West Babylon, New York. The company is one of the last U.S. manufacturers in this field and developed its mercury-free SafetyBLUE line for applications where mercury is prohibited. Its 8,000-square-foot facility includes an ISO-accredited calibration laboratory that certifies instruments and provides NIST-traceable reports.WEST BABYLON, NY
Newport Scientific, IncWith roots reaching back to American Instrument Company’s 1919 opening in Silver Spring, Newport Scientific makes high-pressure equipment and humidity-measurement systems from its Jessup, Maryland operation. Its Superpressure division carries a product line founded in 1923, while Hygrodynamics continues to use the Dunmore Hygrosensor in dew-point monitors and related instruments. The company also acquired the Harwood Engineering product line and supports its equipment with NIST-based calibration services.JESSUP, MD