“Carbon Monoxide (CO)” has been added to your cart. View cart $241.30 120 Liter 1 in stock Hydrogen Sulfide (H2S), Carbon Monoxide (CO), Methane (CH4), Oxygen (O2) quantity Add to cart SKU: GFX120-155-1500-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 Hydrogen Chloride (HCL) $304.00 Add to cart Carbon Dioxide (CO2) $109.25 Add to cart Propane (C3H8) $52.25 Add to cart