Keithley Instruments

Keithley Instruments is a leading designer and manufacturer of advanced electrical test instruments and systems, primarily serving the electronics, semiconductor, and life sciences sectors. The company provides high-precision measurement tools such as source measure units (SMUs), digital multimeters, and sensitive signals instrumentation used in the development of biosensors and medical devices. Founded in 1946 and headquartered in Solon, Ohio, Keithley is now a brand within the Tektronix portfolio under Fortive Corporation. Their solutions are essential for researchers performing low-level electrical characterization of biological materials and advanced therapeutic delivery systems.