O2 20.9%

Hydrogen Sulfide (H₂S) 50 PPM / Carbon Monoxide (CO) 100 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 116L – Custom Mix

Custom 4 Gas H2S CO CH4 O2 Calibration Gas – 116L Cylinder This custom four-gas calibration mixture is produced to match specific detector sensor configurations and alarm setpoints. The standard atmospheric oxygen concentration allows verification...

Hydrogen Sulfide (H₂S) 50 PPM / Carbon Monoxide (CO) 100 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 34L

4 Gas H2S CO CH4 O2 Calibration Gas – 34L Cylinder This compact four-gas calibration mixture is designed for routine detector verification where normal oxygen levels are required. It confirms toxic and combustible sensor response without...

Hydrogen Sulfide (H₂S) 50 PPM / Carbon Monoxide (CO) 100 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 44L

4 Gas H2S CO CH4 O2 Calibration Gas – 44L Cylinder This four-gas calibration mixture is intended for routine detector verification in normal oxygen environments. It confirms sensor response across toxic and combustible channels without triggering...

Hydrogen Sulfide (H₂S) 50 PPM / Carbon Monoxide (CO) 100 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 66L

4 Gas H2S CO CH4 O2 Calibration Gas – 66L Cylinder This four-gas calibration mixture is designed for routine detector verification under normal atmospheric oxygen conditions. It allows technicians to confirm toxic and combustible sensor response...

Hydrogen Sulfide (H₂S) 50 PPM / Carbon Monoxide (CO) 100 PPM / Methane (CH₄) 2.5% (50% LEL)/ Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 60L

4 Gas H2S CO CH4 O2 Calibration Gas – 60L Cylinder This four-gas calibration mixture is designed for routine detector verification in normal oxygen environments. It confirms toxic and combustible sensor response while maintaining a realistic...

Hydrogen Sulfide (H₂S) 50 PPM / Carbon Monoxide (CO) 100 PPM /Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 120L

4 Gas H2S CO CH4 O2 Calibration Gas – 120L Cylinder This four-gas calibration mixture is intended for routine bump testing where detectors must be verified without simulating oxygen-deficient atmospheres. The normal atmospheric oxygen level allows...