$118.75 34 Liter 1 in stock Hydrogen Sulfide (H2S), Carbon Monoxide (CO), Methane (CH4), Oxygen (O2) quantity Add to cart SKU: GFX34-155-1500-I Category: Gas Cylinders Description Description Hydrogen Sulfide 25 ppm/ Carbon Monoxide 50 ppm/ Methane 2.5% (50% LEL)/ Oxygen 12.0%/ N2 Related products Methane (CH4) $128.73 Add to cart Carbon Dioxide (CO2) $109.25 Add to cart Hydrogen (H2) $95.00 Add to cart Chlorine (Cl2) $323.00 Add to cart