Hydrogen Sulfide (H2S), Carbon Monoxide (CO), Methane (CH4), Oxygen (O2) 60 Liter $189.05 Hydrogen Sulfide (H2S), Carbon Monoxide (CO), Methane (CH4), Oxygen (O2) quantity Add to cart SKU: GFX60-140-2500-I Category: Gas Cylinders Description Description Hydrogen Sulfide 10 ppm/ Carbon Monoxide 50 ppm/ Methane 2.5% (50% LEL)/ Oxygen 18.0%/ N2 Related products Chlorine (Cl₂) Calibration Gas – 2 ppm – 60L Cylinder $323.00 Add to cart Ammonia (NH₃) Calibration Gas $304.00 Select options This product has multiple variants. The options may be chosen on the product page Nitrogen (N₂) Calibration Gas – 99.999% Purity – 103L Cylinder $95.00 Add to cart Silane (SiH₄) Calibration Gas – 5 ppm – 60L Cylinder $304.00 Add to cart