4-Gas – Hydrogen Sulfide / Carbon Monoxide / Methane / Oxygen / Nitrogen Calibration Gas Mixtures

Select an option... Hydrogen Sulfide 10 ppm / Carbon Monoxide 50 ppm / Methane 2.5% (50%LEL) / Oxygen 18% / Nitrogen Hydrogen Sulfide 10 ppm / Carbon Monoxide 50 ppm / Methane 2.5% (50% LEL) / Oxygen 20.9% / Nitrogen Hydrogen Sulfide 10 ppm / Carbon Monoxide 300 ppm / Methane 1.45% (58% LEL Pentane Equiv.) / Oxygen 15% / Nitrogen Hydrogen Sulfide 15 ppm / Carbon Monoxide 250 ppm / Methane 2.5% (50% LEL) / Oxygen 18% / Nitrogen Hydrogen Sulfide 20 ppm / Carbon Monoxide 60 ppm / Methane 1.45% (58% LEL Pentane Equiv.) / Oxygen 15% / Nitrogen Hydrogen Sulfide 20 ppm / Carbon Monoxide 200 ppm / Methane 2.5% (50% LEL) / Oxygen 18% / Nitrogen Hydrogen Sulfide 25 ppm / Carbon Monoxide 50 ppm / Methane 1% (20% LEL) / Oxygen 18% / Nitrogen Hydrogen Sulfide 25 ppm / Carbon Monoxide 50 ppm / Methane 1.62% (50% LEL Propane Equiv.) / Oxygen 18% / Nitrogen Hydrogen Sulfide 25 ppm / Carbon Monoxide 50 ppm / Methane 1.62% (50% LEL Propane Equiv.) / Oxygen 19% / Nitrogen Hydrogen Sulfide 25 ppm / Carbon Monoxide 50 ppm / Methane 2.5% (50% LEL) / Oxygen 12% / Nitrogen Hydrogen Sulfide 25 ppm / Carbon Monoxide 50 ppm / Methane 2.5% (50% LEL) / Oxygen 18% / Nitrogen Hydrogen Sulfide 25 ppm / Carbon Monoxide 50 ppm / Methane 2.5% (50% LEL) / Oxygen 20.9% / Nitrogen Hydrogen Sulfide 25 ppm / Carbon Monoxide 100 ppm / Methane 2.5% (50% LEL) / Oxygen 16% / Nitrogen Hydrogen Sulfide 25 ppm / Carbon Monoxide 100 ppm / Methane 2.5% (50% LEL) / Oxygen 17% / Nitrogen Hydrogen Sulfide 25 ppm / Carbon Monoxide 100 ppm / Methane 2.5% (50% LEL) / Oxygen 18% / Nitrogen Hydrogen Sulfide 25 ppm / Carbon Monoxide 100 ppm / Methane 2.5% (50% LEL) / Oxygen 19% / Nitrogen Hydrogen Sulfide 25 ppm / Carbon Monoxide 100 ppm / Methane 2.5% (50% LEL) / Oxygen 20.9% / Nitrogen Hydrogen Sulfide 40 ppm / Carbon Monoxide 100 ppm / Methane 2.5% (50% LEL) / Oxygen 15% / Nitrogen