Product Description
4-Gas Calibration Gas – 25 PPM H2S / 50 PPM CO / 2.5% (50% LEL) CH4 / 16.0% O2 – 34L C-10 Disposable Cylinder
This 4-gas calibration gas blend is designed for portable, short-duration multi-gas monitor calibration in high-risk confined space environments.
With 16.0% oxygen, this mixture simulates pronounced oxygen depletion conditions to verify low-O₂ alarm performance under controlled hypoxic testing. It allows technicians to confirm proper oxygen sensor activation while simultaneously validating toxic and combustible detection channels.
Concentration profile:
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25 PPM Hydrogen Sulfide to verify H₂S electrochemical sensor 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 accuracy
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16.0% Oxygen to validate low-oxygen alarm activation under severe depletion
This blend is commonly used for:
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Mobile field service calibration
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Contractor fleet monitor validation
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Confined space training days
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Utility vault entry preparation
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Municipal maintenance programs
The 34L disposable cylinder offers lightweight portability and simplified logistics for technicians who require a compact, ready-to-deploy calibration solution.
Gas Concentrations
| Component | Concentration |
|---|---|
| Hydrogen Sulfide (H₂S) | 25 PPM |
| Carbon Monoxide (CO) | 50 PPM |
| Methane (CH₄) | 2.5% (50% LEL) |
| Oxygen (O₂) | 16.0% |
| 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 integrity 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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Low-oxygen alarm stress testing
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Portable bump testing programs
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Confined space entry preparation
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Industrial maintenance safety checks
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Compliance verification audits
The 34L disposable format is optimized for short-cycle calibration programs and mobile technicians.
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, site requirements, or regulatory standards.
