GAS CALIBRATION KITSThe CO/CO2/NO2-CKIT Series Calibration Kits include a gas cylinder, tubing, regulator, calibration adapter, carrying case, and instructions to properly test and maintain gas detection instrumentation. Models include a 17L, 58L, or 103L filled gas cylinder with the appropriate calibration gas. The calibration kit CO-CKIT25 is specifically designed for calibrating the CO25 and VA301M Series gas monitors.REFRIGERANT VERIFICATION KITS Perform operation validation on refrigerant monitoring devices in the field with the 3015 Series Refrigerant Verification Kits. Each kit includes a 1L filled refrigerant gas cylinder, 5 ft (1.5m) of plastic tubing, variable regulator, and a hard carrying case.UNIVERSAL CALIBRATION KIT The Model UCK Universal Calibration Kit contains essential items to perform gas calibration on a variety of gas monitoring equipment. The kit includes assorted tubing sizes, couplings, adapters, restrictors, a regulator, pressure gage, and a hard carrying case. Gas cylinders are sold separately. The Model UCK-1 contains a regulator to fit 17L cylinders for non-corrosive gases (N2, CO2, CH4, H2, O2, CO, and refrigerants). For corrosive gases (NO2, H2S, SO2, and NH3), use Model UCK-2 which contains a regulator for 58L cylinders. Model UCK-3 contains both 17L and 58L regulators.