Industrial Scientific 18109160 Calibration Gas, 650 Liter, 100 ppm CO, 25 ppm H2S, 18% O2, LEL 50% CH4 (2.5% Vol), Hazmat MFG# IS-18109160 $2,209.76 Choose Options
Industrial Scientific 18109175 Calibration Gas with iCard, 100 ppm CO, 18% O2, CH4 2% (40% Methane), 103 Liter, Hazmat MFG# IS-18109175 $257.54 Choose Options
Industrial Scientific 18109234 Calibration Gas, iCard, 116 Liter, 100 ppm CO, 25 ppm H2S, 18% O2, 25% LEL Pentane, 10 ppm SO2, HAZMAT MFG# IS-18109234 $671.38 Choose Options
Industrial Scientific 18109231 Calibration Gas, 650 Liter, 100 ppm CO, 25 ppm H2S, 18% O2, 2.5% CH4, 10 ppm SO2, Hazmat MFG# IS-18109231 $2,591.68 Choose Options