California Analytical Instruments, Incorporated (CAI) is one of the world's leading suppliers of quality gas analyzers and systems for use in industrial, environmental and automotive emissions measurement applications. CAI gas analyzers are used in the measurement of NOx, CO, CO2, NO, NO2, N2O, NH3, O2, CH4, SO2, SF6, HCL, THC (total hydrocarbons), and TNMOC (total non-methane organic carbon), ethylene oxide, formaldehyde, VOC's (Volatile Organic Compounds) and many more.

Our complete line of analyzers are ideal for many applications including: measuring stationary stack emissions, mobile source monitoring, diesel emissions, auto emissions, NOx reduction control, thermal destruction efficiencies, fermentation off-gas analysis, greenhouse gas, ETO sterilization, industrial hygiene, multipoint sampling, tracer gas studies, as well as wastewater. Our measurement technologies include: Chemiluminescence, NDIR, FID, Paramagnetic and Photo acoustic Infrared Spectroscopy.