Product Description
4-Gas Calibration Gas – 25 PPM H2S / 50 PPM CO / 2.5% (50% LEL) CH4 / 12.0% O2 – 116L C-10 Cylinder
This 4-gas calibration gas blend is engineered for sustained extreme oxygen-deficiency simulation across large industrial and emergency response programs.
With 12.0% oxygen, this mixture represents severe hypoxic atmospheric modeling used to confirm low-O₂ alarm activation, validate response timing, and stress-test oxygen sensor accuracy in high-liability environments. It simultaneously verifies toxic (H₂S, CO) and combustible (CH₄) detection channels to ensure full multi-sensor reliability.
Concentration profile:
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25 PPM Hydrogen Sulfide for toxic sensor calibration
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50 PPM Carbon Monoxide for conservative CO alarm verification
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2.5% Methane (50% LEL) for combustible channel accuracy
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12.0% Oxygen for extreme oxygen-deficiency alarm validation
Commonly specified for:
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Large confined space entry programs
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Industrial plant-wide calibration schedules
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Petrochemical and energy-sector safety operations
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Emergency response training centers
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Multi-detector fleet maintenance
The 116L cylinder provides extended calibration capacity while maintaining manageable handling and storage compared to higher-pressure large-volume cylinders.
Gas Concentrations
| Component | Concentration |
|---|---|
| Hydrogen Sulfide (H₂S) | 25 PPM |
| Carbon Monoxide (CO) | 50 PPM |
| Methane (CH₄) | 2.5% (50% LEL) |
| Oxygen (O₂) | 12.0% |
| Balance | Nitrogen |
Cylinder Specifications
| Property | Value |
|---|---|
| Cylinder Size | 116L (4.0 ft³) |
| Pressure | 1000 psi |
| Cylinder Specification | C-10 |
| Cylinder Material | Aluminum |
| Gas Reactivity | Reactive |
Reactive multi-gas blends require compatible C-10 regulators to preserve mixture integrity and ensure precise calibration performance.
Applications & Detector Compatibility
Compatible with leading portable and fixed multi-gas detection platforms from BW, MSA, Industrial Scientific, RAE Systems, and Dräger.
Ideal for:
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Extreme low-oxygen alarm validation
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Industrial emergency preparedness
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Fleet-wide bump testing
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Advanced safety compliance programs
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IDLH scenario modeling
The 116L format supports sustained extreme hypoxia validation for high-frequency calibration environments.
Need a Different Concentration or Cylinder Size?
If you do not see the exact gas mixture, ppm level, oxygen percentage, LEL value, or cylinder size required for your application, contact our calibration gas specialists. We can supply custom multi-gas blends tailored to your detector model, regulatory requirements, or site-specific hazard profile.
