Product Description
4-Gas Calibration Gas – 25 PPM H2S / 50 PPM CO / 2.5% (50% LEL) CH4 / 15.0% O2 – 66L C-10 Cylinder
This 4-gas calibration gas blend is formulated for severe oxygen-depletion modeling in confined space entry and industrial rescue training programs.
Containing 15.0% oxygen, this mixture represents advanced hypoxic atmospheric simulation. It enables safety professionals to confirm low-O₂ alarm activation under deep depletion conditions while simultaneously validating toxic (H₂S, CO) and combustible (CH₄) detection performance.
Concentration profile:
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25 PPM Hydrogen Sulfide to verify H₂S electrochemical sensor response
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50 PPM Carbon Monoxide for conservative CO alarm validation
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2.5% Methane (50% LEL) to confirm combustible sensor accuracy
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15.0% Oxygen to validate severe oxygen-deficiency alarm thresholds
This blend is commonly specified for:
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Confined space rescue training drills
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Industrial emergency response simulation
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IDLH condition modeling
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High-liability entry programs
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Advanced EHS certification testing
The 66L cylinder offers balanced volume for repeated hypoxic calibration cycles while remaining portable for field deployment.
Gas Concentrations
| Component | Concentration |
|---|---|
| Hydrogen Sulfide (H₂S) | 25 PPM |
| Carbon Monoxide (CO) | 50 PPM |
| Methane (CH₄) | 2.5% (50% LEL) |
| Oxygen (O₂) | 15.0% |
| Balance | Nitrogen |
Cylinder Specifications
| Property | Value |
|---|---|
| Cylinder Size | 66L (2.3 ft³) |
| Pressure | 1150 psi |
| Cylinder Specification | C-10 |
| Cylinder Material | Aluminum |
| Gas Reactivity | Reactive |
Reactive multi-gas blends require compatible C-10 regulators to maintain mixture integrity and calibration precision.
Applications & Detector Compatibility
Compatible with leading portable multi-gas detection platforms from BW, MSA, Industrial Scientific, RAE Systems, and Dräger.
Ideal for:
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Severe low-oxygen alarm validation
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Rescue team simulation programs
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Confined space compliance training
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Multi-sensor calibration verification
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Industrial plant safety drills
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.
