Multi Calibration Gas: 25 PPM Hydrogen Sulfide, 100 PPM Carbon Monoxide, 2.5% (50% LEL) Methane, 19% Oxygen, Balance Nitrogen (29 Liter)

BW Technologies REG-0.5 Calibration Gas Regulator, 0.5L/min

Replacement Oxygen Sensor for BW Tech Gas Alert MicroClip XT

BW Technologies MCXL-XWHM-Y-NA GasAlertMicroClip XL 4 Gas Detector, CO, H2S, LEL and O2, Yellow

MSA 467895 Fixed Flow Regulator, Model RP, 0.25 LPM

MSA 10107602 Altair 4X Portable Combustible Gas, Oxygen, Hydrogen Sulfide and Carbon Monoxide Monitor with Motion Alert

Lockout Safety Supply 7250 Ball Valve Lockout, 1.5" - 2.5" Diameter, Red

MSA 10089321 Calibration Assembly with Cap, Tube and Connector for Altair 4 Gas Detectors

BW Technologies GA-USB1-IR IR Connectivity Kit, for GasAlert Detectors

BW Technologies XT-XWHM-Y-NA GasAlertMax XT II 4-Gas Detector with Pump, Combustible, O2, H2S and CO, Yellow

MSA (Mine Safety Appliances) 467895 MSA .25 LPM Model RP Fixed Flow Regulator for RP Style Calibration Gas Cylinders, Plastic, 4.5" x 9" x 6.5"