Product Description
4-Gas Calibration Gas – 25 PPM H2S / 50 PPM CO / 2.5% (50% LEL) CH4 / 12.0% O2 – 66L C-10 Cylinder
This 4-gas calibration gas blend is engineered for extreme oxygen-deficiency simulation in advanced confined space and industrial emergency response programs.
With 12.0% oxygen, this mixture models severe atmospheric depletion conditions associated with high-risk entry and rescue scenarios. It enables safety professionals to validate low-O₂ alarm activation accuracy under aggressive depletion levels while confirming toxic and combustible sensor integrity.
Concentration profile:
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25 PPM Hydrogen Sulfide for H₂S electrochemical sensor verification
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50 PPM Carbon Monoxide for conservative CO alarm validation
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2.5% Methane (50% LEL) for combustible sensor accuracy
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12.0% Oxygen for extreme hypoxic alarm threshold confirmation
Commonly specified for:
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Industrial rescue team training
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IDLH environment simulation
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Advanced confined space certification
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Petrochemical and energy-sector safety drills
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Multi-detector fleet stress testing
The 66L cylinder provides balanced capacity for repeated extreme hypoxia 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) | 12.0% |
| 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 and fixed multi-gas detection systems from BW, MSA, Industrial Scientific, RAE Systems, and Dräger.
Ideal for:
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Extreme low-oxygen alarm validation
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Emergency response simulation programs
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Advanced industrial safety training
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High-risk confined space modeling
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Multi-sensor calibration verification
The 66L format supports structured extreme hypoxia validation programs requiring repeat calibration without transitioning to high-capacity cylinders.
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.
