Product Description
4-Gas Calibration Gas – 25 PPM H2S / 50 PPM CO / 2.5% (50% LEL) CH4 / 15.0% O2 – 34L C-10 Cylinder
This 4-gas calibration gas blend is formulated for severe hypoxic simulation in confined space entry and industrial safety calibration programs.
With 15.0% oxygen, this mixture represents significant atmospheric oxygen depletion, enabling accurate validation of low-O₂ alarm thresholds and response timing. It simultaneously verifies toxic and combustible detection channels to ensure multi-sensor integrity before field deployment.
Concentration profile:
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25 PPM Hydrogen Sulfide for H₂S sensor verification
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50 PPM Carbon Monoxide for CO alarm accuracy
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2.5% Methane (50% LEL) to validate combustible sensor performance
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15.0% Oxygen to confirm severe oxygen-deficiency alarm activation
This blend is commonly used for:
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Permit-required confined space programs
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Portable multi-gas fleet bump testing
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Industrial maintenance safety checks
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Contractor compliance verification
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Entry-level hypoxic simulation training
The 34L disposable cylinder provides a compact, field-ready solution for technicians who require reliable severe hypoxia validation without managing larger-capacity inventory.
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 | 34L (1.2 ft³) |
| Pressure | 500 psi |
| Cylinder Specification | C-10 |
| Cylinder Material | Aluminum |
| Gas Reactivity | Reactive |
| Cylinder Type | Disposable |
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 detection 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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Multi-sensor bump testing
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Portable detector fleet maintenance
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Compliance inspections
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Safety training environments
The 34L format offers controlled hypoxic calibration in a manageable, disposable cylinder size.
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.
