116L 50ppm CO/ 50% LEL/ 25ppm H2S/12% O2

Gas mixture of 50 PPM Carbon Monoxide, 25 PPM Hydrogen Sulfide, 2.5% Methane (50% LEL) , 12% Oxygen, Balance Nitrogen Calibration Gas Carbon Monoxide 50 PPM, Methane 50% LEL, Hydrogen Sulfide 25 PPM, Oxygen 12%, Balance Nitrogen in a 116 Liter Cylinder, For Use with Any and All Gas Detectors, Cylinder Connection C-10, Calibration Certificate NIST. Show Less