Product Description
4-Gas Calibration Gas – 25 PPM H2S / 250 PPM CO / 2.5% (50% LEL) CH4 / 20.9% O2 – 116L C-10 Cylinder
This 4-gas calibration gas blend is engineered for sustained elevated carbon monoxide threshold validation in large-scale industrial and combustion environments.
With 250 PPM Carbon Monoxide, this mixture supports facilities operating with higher CO alarm setpoints or performing worst-case exposure testing in combustion-heavy operations. The inclusion of 20.9% oxygen preserves atmospheric baseline conditions, ensuring accurate calibration of toxic and combustible channels without oxygen-depletion influence.
Concentration profile:
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25 PPM Hydrogen Sulfide for toxic sensor calibration
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250 PPM Carbon Monoxide for high-threshold CO alarm validation
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2.5% Methane (50% LEL) for combustible channel verification
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20.9% Oxygen to maintain ambient atmospheric reference
Commonly specified for:
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Refinery and petrochemical facilities
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Boiler systems and combustion monitoring programs
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Heavy manufacturing and industrial plants
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Multi-detector fleet management
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Process safety compliance audits
The 116L cylinder provides extended calibration capacity while maintaining practical storage and handling compared to higher-pressure large-volume cylinders.
Gas Concentrations
| Component | Concentration |
|---|---|
| Hydrogen Sulfide (H₂S) | 25 PPM |
| Carbon Monoxide (CO) | 250 PPM |
| Methane (CH₄) | 2.5% (50% LEL) |
| Oxygen (O₂) | 20.9% |
| 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 maintain mixture integrity and ensure precise calibration performance.
Applications & Detector Compatibility
Compatible with leading portable and fixed multi-gas detection platforms from BW, MSA, Industrial Scientific, RAE Systems, and Dräger.
Ideal for:
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Elevated CO alarm validation
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Industrial combustion safety programs
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Enterprise bump testing schedules
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Multi-sensor calibration verification
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Large-scale safety compliance programs
The 116L format supports sustained high-CO calibration operations across enterprise-level facilities.
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.
