$191.90 60 Liter Hydrogen Sulfide (H2S), Carbon Monoxide (CO), Methane (CH4), Oxygen (O2) quantity Add to cart SKU: GFX60-155-5300-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 Methane (CH₄) Calibration Gas – 30% LEL – 34L Steel Cylinder $128.73 Add to cart Carbon Dioxide (CO₂) Calibration Gas – 5000 ppm – 103L Cylinder $109.25 Add to cart Sale! Carbon Monoxide (CO) Calibration Gas – 50 ppm & 100 ppm – 103L Cylinder $115.00 Original price was: $115.00.$109.25Current price is: $109.25. Select options This product has multiple variants. The options may be chosen on the product page