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 engineered for calibration and bump testing of portable and fixed gas detection instruments used in industrial safety monitoring.
The mixture contains 10 PPM H₂S, 35 PPM CO, 0.5% Methane (10% LEL equivalent), and 20.9% Oxygen balanced with Nitrogen. Packaged in a 44L aluminum cylinder pressurized to 750 PSI, this calibration gas mixture provides stable concentrations required for accurate gas detector verification.
Because this mixture contains reactive gases such as Hydrogen Sulfide, it is manufactured using cylinder preparation techniques designed to maintain gas stability and calibration accuracy throughout the cylinder’s usable life.
Calibration Gas Mixture Specifications
| Gas Component | Concentration |
|---|---|
| Hydrogen Sulfide (H₂S) | 10 PPM |
| Carbon Monoxide (CO) | 35 PPM |
| Methane (CH₄) | 0.5% (10% LEL) |
| Oxygen (O₂) | 20.9% |
| Balance Gas | Nitrogen |
Cylinder Details
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Cylinder Volume: 44L
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Cylinder Pressure: 750 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: 1.5 Cubic Feet
Applications for H₂S / CO / CH₄ / O₂ Calibration Gas
This four-gas calibration mixture is widely used for:
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Portable multi-gas detector calibration
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Bump testing before confined space entry
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Industrial safety compliance programs
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Routine gas monitor performance verification
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Environmental health and safety monitoring
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Oil & gas, utilities, wastewater, and industrial facilities
Maintaining proper calibration gas ensures gas detection instruments respond accurately to hazardous atmospheres, preventing false readings and improving worker safety.
Why Safety Professionals Use This Multi-Gas Calibration Mixture
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Calibrates H₂S, CO, CH₄, and O₂ sensors simultaneously
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Reliable mixture for routine bump testing and detector calibration
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Manufactured to tight concentration tolerances
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Stable reactive gas preparation for consistent sensor response
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Compatible with most portable multi-gas monitors
Custom Calibration Gas Available
Need a different gas concentration, cylinder size, or mixture?
We manufacture custom calibration gas mixtures for a wide range of gas detection instruments. If the mixture you need is not listed in our store, our team can provide a fast custom calibration gas quote.
