Product Description
4-Gas Calibration Gas – 25 PPM H2S / 50 PPM CO / 2.5% (50% LEL) CH4 / 16.0% O2 – 116L C-10 Cylinder
This 4-gas calibration gas blend is engineered for structured calibration schedules across industrial safety departments managing multiple gas detection instruments.
With 16.0% oxygen, this mixture supports validation of deep low-O₂ alarm thresholds in environments where atmospheric depletion modeling is required. It enables EHS teams to confirm accurate oxygen sensor response while simultaneously verifying toxic (H₂S, CO) and combustible (CH₄) detection channels.
Concentration profile:
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25 PPM Hydrogen Sulfide for toxic gas sensor accuracy verification
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50 PPM Carbon Monoxide for conservative CO calibration programs
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2.5% Methane (50% LEL) for combustible channel confirmation
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16.0% Oxygen to validate severe oxygen-depletion alarm activation
This blend is commonly specified for:
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Manufacturing facilities with recurring confined space entries
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Refinery and chemical processing operations
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Municipal utility safety departments
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Large contractor EHS standardization programs
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Annual and quarterly compliance calibration cycles
The 116L cylinder provides extended gas volume without the footprint of a 120L cylinder, making it ideal for facilities balancing storage constraints with consistent calibration demand.
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 | 116L (4.0 ft³) |
| Pressure | 1000 psi |
| Cylinder Specification | C-10 |
| Cylinder Material | Aluminum |
| Gas Reactivity | Reactive |
Reactive multi-gas blends should be used with compatible C-10 regulators to maintain mixture integrity and calibration accuracy.
Applications & Detector Compatibility
Compatible with major portable multi-gas platforms from BW, MSA, Industrial Scientific, RAE Systems, and Dräger.
Ideal for:
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Deep low-oxygen alarm validation
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Multi-sensor calibration standardization
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Industrial safety compliance programs
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Scheduled bump testing operations
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Large confined space management systems
The 116L format supports consistent, predictable calibration cycles in mid-to-large industrial operations.
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.
