Product Description
4-Gas Calibration Gas – 25 PPM H2S / 50 PPM CO / 2.5% (50% LEL) CH4 / 12.0% O2 – 34L C-10 Cylinder
This 4-gas calibration gas blend is engineered for portable extreme oxygen-deficiency simulation in confined space and emergency preparedness programs.
With 12.0% oxygen, this mixture represents severe atmospheric depletion conditions associated with high-risk entry and rescue operations. It allows safety professionals to validate low-O₂ alarm response under aggressive hypoxic scenarios while confirming toxic and combustible channel accuracy.
Concentration profile:
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25 PPM Hydrogen Sulfide for toxic sensor verification
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50 PPM Carbon Monoxide for conservative CO alarm confirmation
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2.5% Methane (50% LEL) for combustible sensor calibration
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12.0% Oxygen for extreme oxygen-deficiency alarm validation
Commonly specified for:
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Confined space rescue simulation
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Industrial emergency response drills
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Contractor compliance programs
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Multi-gas fleet bump testing
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Pre-entry atmospheric verification
The 44L cylinder provides a field-ready format suitable for technicians who require extreme hypoxia modeling without managing high-capacity 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 | 44L (1.5 ft³) |
| Pressure | 750 psi |
| Cylinder Specification | C-10 |
| Cylinder Material | Aluminum |
| Gas Reactivity | Reactive |
Reactive multi-gas blends should be paired with compatible C-10 regulators to maintain mixture stability 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 scenario training
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Industrial safety audits
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Fleet detector calibration
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High-risk confined space modeling
The 44L format supports controlled extreme hypoxia validation in compact safety programs.
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.
