O2 20.9%

Hydrogen Sulfide (H₂S) 40 PPM / Carbon Monoxide (CO) 200 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 120L

High CO 4 Gas Calibration Gas – 120L Cylinder This large-volume four-gas calibration mixture supports ongoing detector maintenance where elevated carbon monoxide alarm setpoints must be validated alongside hydrogen sulfide and combustible channels...

Hydrogen Sulfide (H₂S) 40 PPM / Carbon Monoxide (CO) 200 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 34L

High CO 4 Gas Calibration Gas – 34L Cylinder This four-gas calibration mixture verifies detector response at elevated carbon monoxide alarm thresholds while confirming hydrogen sulfide and combustible channels under normal atmospheric oxygen...

Hydrogen Sulfide (H₂S) 40 PPM / Carbon Monoxide (CO) 200 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 44L

High CO 4 Gas Calibration Gas – 44L Cylinder This four-gas calibration mixture is designed to validate elevated carbon monoxide alarm thresholds while confirming hydrogen sulfide and combustible sensor response under normal atmospheric oxygen...

Hydrogen Sulfide (H₂S) 40 PPM / Carbon Monoxide (CO) 200 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 60L

High CO 4 Gas Calibration Gas – 60L Cylinder This four-gas calibration mixture confirms detector response at elevated carbon monoxide alarm levels while verifying hydrogen sulfide and combustible channels under normal atmospheric oxygen conditions...

Hydrogen Sulfide (H₂S) 40 PPM / Carbon Monoxide (CO) 200 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 66L

High CO 4 Gas Calibration Gas – 66L Cylinder This four-gas calibration mixture is designed to confirm detector response at elevated carbon monoxide alarm levels while validating hydrogen sulfide and combustible channels under normal atmospheric...

Hydrogen Sulfide (H₂S) 40 PPM / Carbon Monoxide (CO) 200 PPM / Methane (CH₄) 2.5% (50% LEL)/ Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 116L

High CO Four Gas Calibration Gas – 116L Cylinder This multi-gas calibration cylinder verifies detector performance where elevated carbon monoxide thresholds must be confirmed along with hydrogen sulfide, combustible gas, and oxygen channels in...