Product Description
4-Gas Calibration Gas – 25 PPM H2S / 50 PPM CO / 2.5% (50% LEL) CH4 / 15.0% O2 – 116L C-10 Cylinder
This 4-gas calibration gas blend is engineered for extended severe oxygen-deficiency validation across large industrial and confined space safety programs.
Containing 15.0% oxygen, this mixture simulates significant atmospheric depletion conditions to verify low-O₂ alarm accuracy, sensor response timing, and detector stability during high-risk operations. At the same time, it validates toxic and combustible channels to ensure full-spectrum multi-gas monitor performance.
Concentration profile:
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25 PPM Hydrogen Sulfide for H₂S electrochemical sensor calibration
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50 PPM Carbon Monoxide for conservative CO alarm validation
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2.5% Methane (50% LEL) for combustible channel accuracy
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15.0% Oxygen to confirm severe oxygen-deficiency alarm activation
Commonly specified for:
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Large confined space entry programs
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Industrial manufacturing facilities
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Refinery and energy sector compliance
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Emergency response training operations
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High-frequency detector fleet calibration
The 116L cylinder provides substantial gas volume for sustained calibration schedules while maintaining manageable storage and transport requirements compared to larger high-pressure options.
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 | 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 maintain precise calibration performance.
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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Severe oxygen-deficiency alarm validation
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Industrial plant-wide bump testing
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Multi-sensor calibration programs
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Compliance-driven safety audits
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Rescue and emergency simulation training
The 116L format is optimized for organizations requiring extended severe hypoxia calibration without frequent cylinder replacement.
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.
