$175.75 60 Liter Hydrogen Sulfide (H2S), Carbon Monoxide (CO), Methane (CH4), Oxygen (O2) quantity Add to cart SKU: GFX60-150-100-I Category: Gas Cylinders Description Description Hydrogen Sulfide 20 ppm/ Carbon Monoxide 60 ppm/ Methane 1.45% (58% LEL Pentane Equiv.)/ Oxygen 15.0%/ N2 Related products Hydrogen Sulfide (H₂S) Calibration Gas – 25 ppm – 60L Cylinder $142.50 Add to cart Propane (C₃H₈) Calibration Gas – 50% LEL (1.1% Vol) – 34L Cylinder $52.25 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 Nitric Oxide (NO) Calibration Gas – 25 ppm – 60L Cylinder $304.00 Add to cart