Product Description
4-Gas Calibration Gas – 25 PPM H2S / 200 PPM CO / 2.5% (50% LEL) CH4 / 20.0% O2 – 116L C-10 Cylinder
This 4-gas calibration gas blend is engineered for sustained industrial calibration cycles requiring elevated carbon monoxide validation combined with controlled oxygen baseline variance testing.
The 200 PPM Carbon Monoxide concentration supports facilities operating with moderate high CO alarm thresholds, while 20.0% oxygen introduces a measured atmospheric deviation to verify oxygen sensor response stability without simulating oxygen-deficiency environments.
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 calibration
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2.5% Methane (50% LEL) for combustible sensor accuracy
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20.0% Oxygen for oxygen baseline deviation verification
Commonly used in:
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Manufacturing and processing facilities
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Industrial combustion monitoring programs
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Detector fleet maintenance schedules
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Central calibration stations
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Multi-sensor compliance verification
The 116L (4.0 ft³) cylinder offers high calibration capacity at 1000 psi, balancing extended use with manageable storage and handling requirements.
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 | 116L (4.0 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 consistent calibration performance.
Applications & Detector Compatibility
Compatible with leading 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 threshold validation
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Oxygen channel performance verification
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Routine bump testing and full calibration
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Industrial compliance audits
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Large detector fleet programs
The 116L format supports structured high-volume calibration without moving to maximum-pressure cylinder tiers.
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 specifications and site-specific safety requirements.
