“Methane (CH4)” has been added to your cart. View cart $308.75 120 Liter 1 in stock Hydrogen Sulfide (H2S), Carbon Monoxide (CO), Methane (CH4), Oxygen (O2) quantity Add to cart SKU: GFX120-155-5300-I Category: Gas Cylinders Description Description H2S 25 ppm/ CO 100 ppm/ CH4 2.5% (50% LEL)/ O2 18.0%/ N2 Related products Carbon Monoxide (CO) $109.25 Add to cart Hydrogen Chloride (HCL) $304.00 Add to cart Carbon Monoxide (CO) $109.25 Add to cart Propane (C3H8) $52.25 Add to cart