Product Description
4-Gas Calibration Gas – 25 PPM H2S / 200 PPM CO / 2.5% (50% LEL) CH4 / 20.0% O2 – 44L C-10 Cylinder
This 4-gas calibration gas blend is designed for mid-level carbon monoxide validation combined with controlled oxygen baseline deviation testing in a compact 44L cylinder format.
The 200 PPM Carbon Monoxide concentration supports elevated alarm threshold verification in combustion-related and industrial environments. The 20.0% oxygen level allows calibration teams to confirm oxygen sensor performance under slightly reduced atmospheric conditions without entering confined-space deficiency ranges.
Concentration profile:
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25 PPM Hydrogen Sulfide for toxic gas channel verification
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200 PPM Carbon Monoxide for elevated CO calibration
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2.5% Methane (50% LEL) for combustible sensor accuracy
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20.0% Oxygen for oxygen baseline variance validation
Common use cases include:
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Portable multi-gas detector calibration
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Industrial maintenance programs
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Field technician bump testing
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Combustion equipment safety validation
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Safety compliance verification
The 44L cylinder offers a compact footprint while maintaining sufficient volume for structured calibration cycles.
Gas Concentrations
| Component | Concentration |
|---|---|
| Hydrogen Sulfide (H₂S) | 25 PPM |
| Carbon Monoxide (CO) | 200 PPM |
| Methane (CH₄) | 2.5% (50% LEL) |
| Oxygen (O₂) | 20.0% |
| 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 4-gas blends require compatible C-10 regulators to ensure mixture stability and calibration precision.
Applications & Detector Compatibility
Compatible with leading portable multi-gas monitors and fixed systems from BW, MSA, Industrial Scientific, RAE Systems, and Dräger.
Ideal for:
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Elevated CO alarm verification
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Oxygen channel validation
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Routine bump testing
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Industrial safety inspections
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Field-based calibration programs
The 44L size is commonly selected for mobile safety teams and moderate detector fleets.
Need a Different Concentration or Cylinder Size?
If your application requires a different ppm level, oxygen percentage, LEL concentration, or cylinder size, our calibration gas specialists can supply custom 4-gas blends tailored to your detector platform and regulatory requirements.
