On-Site Instruments, LLC specializes in rental, sales and repair services of environmental/industrial hygiene and safety equipment, chromatographs, mobile labs and many more. Based in Lewis Center, Ohio, the company offers calibration and repair estimates on flame ionization detectors (FIDs), photo ionization detectors, gas chromatographs, confined space monitors, and oil and water level meters among others. The products offered by On-Site Instruments, LLC are Thermo MIE Personal Dataram, Arizona Instrument Jerome 431-X, Larson Davis 710, etc.