$147.25 34 Liter Hydrogen Sulfide (H2S), Carbon Monoxide (CO), Methane (CH4), Oxygen (O2) quantity Add to cart SKU: GFX34-155-5300-I Category: Gas Cylinders Description Description H2S 25 ppm/ CO 100 ppm/ CH4 2.5% (50% LEL)/ O2 18.0%/ N2 Related products Silane (SiH₄) Calibration Gas – 20 ppm – 60L Cylinder $304.00 Add to cart Hydrogen Chloride (HCl) Calibration Gas – 20 ppm – 60L Cylinder $304.00 Add to cart Phosphine (PH₃) Calibration Gas – 0.5 ppm – 60L Cylinder $304.00 Add to cart Chlorine (Cl₂) Calibration Gas – 2 ppm – 60L Cylinder $323.00 Add to cart