Description 4-Gas Cylinder for MSA, H2S 20 ppm / CH4 1.45% vol (Pentane Sim. 58% LEL) /CO 60 ppm /O2 15% vol in N2, 58L, 10045035 Description Specifications This 4-Gas Cylinder can calibrate MSA Safety products. Gases include Hydrogen Sulfide 20 ppm, Methane 1.45% vol (as Pentane Sim. 58% LEL), Carbon Monoxide 60 ppm, and Oxygen 15% vol with Nitrogen balance. TypeMSA Mix Gas NameHydrogen Sulfide, Carbon Monoxide, Methane (as Pentane Sim.), Oxygen, Nitrogen Gas MixtureHydrogen Sulfide 20 ppm, Methane 1.45% vol (as Pentane Sim. 58% LEL), Carbon Monoxide 60 ppm, Oxygen 15% vol Background GasNitrogen Cylinder Capacity58 L Accuracy /-5% Bump Test RangesH2S-18-22 ppm CO-54-66 ppm LEL-52-64% O2-13-17% Max. Pressure1000 psi