Product Description
H₂S 25 PPM / CO 100 PPM / CH₄ 2.5% (50% LEL) / O₂ 19.0% 4-Gas Calibration Gas – 120L 1050 PSI
This high-capacity 4-gas calibration mixture 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
Engineered for calibration and bump testing of portable and fixed multi-gas monitors requiring oxygen-deficiency alarm validation.
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: 120L (4.2 Cubic Feet)
Cylinder Pressure: 1050 PSI
Valve Type: C-10
Cylinder Material: Aluminum
Gas Reactivity: Reactive
The 120L 1050 PSI configuration provides maximum calibration volume for high-usage safety programs and centralized calibration stations.
Application Positioning
Unlike 20.9% oxygen blends that simulate normal atmospheric air, this 19.0% oxygen mixture is designed to:
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Trigger low-oxygen alarm thresholds
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Simulate mild confined space oxygen deficiency
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Support OSHA-required compliance testing
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Validate sensor response under reduced oxygen conditions
Methane at 2.5% equals 50% LEL for combustible sensor verification.
CO at 100 PPM aligns with standard alarm calibration setpoints.
Why Choose 120L 1050 PSI for 19.0% O₂?
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High total calibration cycles
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Reduced cylinder replacement frequency
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Lower cost per test over time
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Ideal for facility-wide safety programs
Need Alternate Oxygen Levels or Cylinder Sizes?
This blend is available in 17.0%, 19.0%, and 20.9% oxygen levels across multiple cylinder sizes. Contact us for custom calibration gas configurations.
