Product Description
4-Gas Calibration Gas – 25 PPM H2S / 50 PPM CO / 2.5% (50% LEL) CH4 / 17.0% O2 – 60L C-10 Cylinder
This 4-gas calibration gas blend is engineered for precision bump testing and full calibration of portable multi-gas monitors used in confined space and industrial safety programs.
Containing 17.0% oxygen, this mixture simulates extreme oxygen-deficient atmospheric conditions far below OSHA’s 19.5% threshold. It enables technicians to verify oxygen alarm activation under severe depletion scenarios while simultaneously confirming toxic and combustible sensor accuracy.
Concentration profile:
-
25 PPM Hydrogen Sulfide for toxic exposure sensor validation
-
50 PPM Carbon Monoxide for conservative CO alarm calibration
-
2.5% Methane (50% LEL) for combustible sensor verification
-
17.0% Oxygen for extreme oxygen-deficiency simulation
This blend is commonly specified for confined space rescue training, emergency response drills, and facilities requiring aggressive oxygen alarm validation testing.
The 60L cylinder offers a balanced mid-range volume ideal for field calibration programs and mobile safety teams.
Gas Concentrations
| Component | Concentration |
|---|---|
| Hydrogen Sulfide (H₂S) | 25 PPM |
| Carbon Monoxide (CO) | 50 PPM |
| Methane (CH₄) | 2.5% (50% LEL) |
| Oxygen (O₂) | 17.0% |
| 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 ensure mixture stability and calibration accuracy.
Applications & Detector Compatibility
Compatible with most major portable multi-gas monitors used for toxic, combustible, and oxygen detection, including BW, MSA, Industrial Scientific, RAE Systems, and Dräger.
Typical applications include:
-
Extreme oxygen-deficiency alarm validation
-
Confined space entry training
-
Rescue simulation exercises
-
Multi-sensor bump testing programs
-
Industrial hygiene compliance audits
The 60L size supports portable deployment while offering sufficient capacity for multiple calibration cycles.
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 provide custom multi-gas blends tailored to your detector model, regulatory standards, or site-specific safety requirements.
