$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 Carbon Dioxide (CO₂) Calibration Gas – 5000 ppm – 103L Cylinder $109.25 Add to cart Chlorine (Cl₂) Calibration Gas – 5 ppm – 60L Cylinder $304.00 Add to cart Methane (CH₄) Calibration Gas – 20% LEL – 103L Cylinder $95.00 Add to cart Carbon Monoxide (CO) Calibration Gas – 50 ppm – 103L Cylinder $109.25 Add to cart