Product Description
4-Gas Calibration Gas – 25 PPM H2S / 50 PPM CO / 2.5% (50% LEL) CH4 / 15.0% O2 – 60L C-10 Cylinder
This 4-gas calibration gas blend is engineered for progressive oxygen-depletion validation during confined space and industrial process safety testing.
Containing 15.0% oxygen, this mixture represents severe hypoxic atmospheric modeling to validate low-O₂ alarm response timing and threshold accuracy. It enables safety teams to stress-test oxygen sensors under controlled depletion conditions while simultaneously confirming toxic and combustible channel calibration.
Concentration profile:
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25 PPM Hydrogen Sulfide to verify toxic gas detection performance
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50 PPM Carbon Monoxide for conservative CO threshold validation
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2.5% Methane (50% LEL) to confirm combustible sensor response
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15.0% Oxygen to validate severe low-oxygen alarm activation
This blend is commonly specified for:
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Industrial confined space programs
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Refinery and chemical plant safety systems
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Process safety management (PSM) validation
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Advanced EHS compliance audits
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Mid-volume multi-detector calibration cycles
The 60L cylinder provides a balanced capacity option for facilities requiring repeated severe hypoxic calibration without transitioning to larger 116L or 120L cylinders.
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 | 60L (2.1 ft³) |
| Pressure | 1000 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 multi-gas instruments from BW, MSA, Industrial Scientific, RAE Systems, and Dräger.
Ideal for:
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Severe low-oxygen alarm validation
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Industrial process safety programs
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Multi-sensor bump testing
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Confined space certification testing
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Advanced safety training exercises
The 60L format supports repeatable calibration programs with manageable storage and deployment requirements.
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.
