Product Description
4-Gas Calibration Gas – 25 PPM H2S / 50 PPM CO / 2.5% (50% LEL) CH4 / 17.0% O2 – 34L C-10 Disposable Cylinder
This 4-gas calibration gas blend is engineered for precision bump testing and full calibration of portable multi-gas monitors used in confined space entry and industrial safety programs.
Containing 17.0% oxygen, this mixture replicates extreme oxygen-deficient conditions well below OSHA’s 19.5% safety threshold. It allows technicians to validate oxygen alarm activation under severe depletion scenarios while simultaneously confirming toxic and combustible sensor accuracy.
Concentration profile:
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25 PPM Hydrogen Sulfide for toxic exposure sensor validation
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50 PPM Carbon Monoxide for conservative CO alarm calibration
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2.5% Methane (50% LEL) for combustible sensor verification
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17.0% Oxygen for extreme oxygen-deficiency simulation
This blend is commonly specified for confined space rescue drills, emergency response training, and facilities requiring aggressive oxygen alarm verification testing.
The 34L disposable cylinder offers lightweight portability for service kits, mobile technicians, and low-volume calibration programs.
Gas Concentrations
| Component | Concentration |
|---|---|
| Hydrogen Sulfide (H₂S) | 25 PPM |
| Carbon Monoxide (CO) | 50 PPM |
| Methane (CH₄) | 2.5% (50% LEL) |
| Oxygen (O₂) | 17.0% |
| 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 require compatible C-10 regulators to maintain mixture stability and ensure calibration precision.
Applications & Detector Compatibility
Compatible with most major portable multi-gas monitors used for toxic, combustible, and oxygen detection, including BW, MSA, Industrial Scientific, RAE Systems, and Dräger.
Typical applications include:
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Extreme oxygen-deficiency alarm validation
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Confined space rescue simulation
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Emergency response training
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Multi-sensor bump testing
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Portable calibration programs
The 34L size is ideal for field technicians needing lightweight, deployable calibration cylinders.
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 standards, or site-specific safety requirements.
