Product Description
4-Gas Calibration Gas for Multi-Gas Detector Testing
This Hydrogen Sulfide (H₂S), Carbon Monoxide (CO), Methane (CH₄), and Oxygen (O₂) calibration gas mixture is designed for accurate calibration and bump testing of portable and fixed gas detection instruments used in industrial safety programs.
The mixture contains 25 PPM H₂S, 100 PPM CO, 1.25% Methane (25% LEL equivalent), and 19.0% Oxygen balanced with Nitrogen. Packaged in a 116 liter aluminum cylinder pressurized to 1000 PSI, this reactive calibration gas provides stable concentrations required for reliable detector performance verification.
Because this mixture contains reactive gases such as Hydrogen Sulfide, it is manufactured using cylinder preparation methods designed to maintain gas stability and accuracy throughout the usable life of the cylinder.
Calibration Gas Mixture Specifications
| Gas Component | Concentration |
|---|---|
| Hydrogen Sulfide (H₂S) | 25 PPM |
| Carbon Monoxide (CO) | 100 PPM |
| Methane (CH₄) | 1.25% (25% LEL) |
| Oxygen (O₂) | 19.0% |
| Balance Gas | Nitrogen |
Cylinder Details
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Cylinder Volume: 116 Liters
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Cylinder Pressure: 1000 PSI
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Cylinder Material: Aluminum
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Valve Type: C-10
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Gas Reactivity: Reactive Mixture
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Cylinder Capacity: 4.0 Cubic Feet
Applications for H₂S / CO / CH₄ / O₂ Calibration Gas
This four-gas calibration mixture is commonly used for:
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Portable multi-gas detector calibration
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Industrial safety compliance programs
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Bump testing before confined space entry
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Routine gas monitor performance verification
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Environmental health and safety monitoring programs
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Oil & gas, utilities, wastewater, and industrial facilities
Maintaining proper calibration gas ensures that gas detectors respond accurately to hazardous atmospheres, helping prevent false readings and ensuring worker safety.
Why Safety Managers Use This Multi-Gas Calibration Mixture
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Simultaneously calibrates H₂S, CO, CH₄, and O₂ sensors
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Designed for reliable bump testing and instrument calibration
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Manufactured to tight concentration tolerances
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Stable reactive mixture for accurate detector response
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Compatible with a wide range of portable multi-gas monitors
Custom Calibration Gas Available
Need a different concentration, gas combination, or cylinder size?
We manufacture custom calibration gas mixtures for a wide range of gas detection instruments. If the exact mixture you need is not listed in our store, our team can provide a fast custom calibration gas quote.
