Advanced Instruments Inc - A supplier of instrumentation for clinical, pharmaceutical, biotechnology, microbiology and food laboratories around the world.
https://www.aicompanies.com/
Keithley Instruments Inc - Manufactures and markets precision electronic test and measurement instruments and systems.
https://www.tek.com/en/keithley
MKS Instruments Inc - Supplies instruments and components used to measure, control, analyze and isolate gases in semiconductor.
https://www.mks.com/
