Product Description
4-Gas Calibration Gas – 25 PPM H2S / 200 PPM CO / 2.5% (50% LEL) CH4 / 20.0% O2 – 60L C-10 Cylinder
This 4-gas calibration gas blend is formulated for industrial safety programs requiring elevated carbon monoxide validation combined with controlled oxygen variance testing.
The 200 PPM Carbon Monoxide concentration supports mid-to-high alarm setpoints commonly used in combustion monitoring and industrial safety compliance. The inclusion of 20.0% oxygen allows calibration teams to verify oxygen sensor response under slight atmospheric deviation conditions while remaining above hypoxic thresholds.
Concentration profile:
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25 PPM Hydrogen Sulfide for toxic channel validation
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200 PPM Carbon Monoxide for elevated CO alarm testing
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2.5% Methane (50% LEL) for combustible sensor calibration
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20.0% Oxygen for oxygen variance confirmation
Frequently specified for:
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Industrial plant calibration programs
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Combustion equipment monitoring
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Process ventilation verification
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Routine bump testing of portable multi-gas monitors
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Detector fleet maintenance schedules
The 60L cylinder offers a balanced capacity solution for facilities needing reliable calibration volume without moving to higher-pressure large-format cylinders.
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 | 60L (2.1 ft³) |
| Pressure | 1000 psi |
| Cylinder Specification | C-10 |
| Cylinder Material | Aluminum |
| Gas Reactivity | Reactive |
Reactive multi-gas blends require compatible C-10 regulators to maintain mixture stability and ensure calibration accuracy.
Applications & Detector Compatibility
Compatible with major portable and fixed multi-gas detection systems from BW, MSA, Industrial Scientific, RAE Systems, and Dräger.
Ideal for:
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Elevated CO alarm validation
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Oxygen sensor baseline drift testing
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Industrial combustion monitoring
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Safety compliance audits
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Multi-sensor bump testing cycles
The 60L configuration supports structured calibration intervals across medium-size industrial operations.
Need a Different Concentration or Cylinder Size?
If you require a different ppm level, oxygen percentage, LEL value, or cylinder size, contact our calibration gas specialists. Custom 4-gas blends are available to match detector manufacturer requirements and site-specific safety protocols.
