Product Description
H₂S 25 PPM / CO 100 PPM / CH₄ 2.5% (50% LEL) / O₂ 19.0% 4-Gas Calibration Gas – 116L 1000 PSI
This high-capacity 4-gas calibration blend contains:
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Hydrogen Sulfide (H₂S) – 25 PPM
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Carbon Monoxide (CO) – 100 PPM
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Methane (CH₄) – 2.5% (50% LEL)
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Oxygen (O₂) – 19.0%
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Balance Gas – Nitrogen
Designed for calibration and bump testing of portable and fixed multi-gas monitors requiring oxygen-deficiency alarm verification.
Gas Composition
H₂S 25 PPM / CO 100 PPM / CH₄ 2.5% (50% LEL) / O₂ 19.0%
Balance: Nitrogen
Gas Count: 4
Cylinder Specifications
Cylinder Size: 116L (4.0 Cubic Feet)
Cylinder Pressure: 1000 PSI
Valve Type: C-10
Cylinder Material: Aluminum
Gas Reactivity: Reactive
The 116L 1000 PSI configuration provides extended calibration volume with slightly lower fill pressure than 1050 PSI cylinders, offering flexibility for some regulator setups.
Application Positioning
This 19.0% oxygen formulation is designed to:
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Trigger low-oxygen alarm setpoints
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Simulate mild oxygen-deficient confined space conditions
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Support OSHA-required compliance testing
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Validate sensor performance under reduced oxygen levels
Methane at 2.5% equals 50% LEL for combustible sensor verification.
CO at 100 PPM aligns with common low-alarm calibration thresholds.
Ideal For
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Centralized calibration stations
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Large industrial safety programs
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Utilities and municipal compliance operations
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Multi-detector fleet maintenance
Need Alternate Oxygen Levels or Cylinder Sizes?
This blend is available in 17.0%, 19.0%, and 20.9% oxygen levels across 34L, 44L, 60L, 66L, 116L, and 120L cylinders. Contact us for custom calibration gas configurations.
