Product Description
18.5% Oxygen Deficiency 4-Gas Calibration Gas – 116L 1000 PSI Custom Blend
Built for regulated safety programs, this custom 4-gas mixture contains:
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Hydrogen Sulfide (H₂S) – 25 PPM
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Carbon Monoxide (CO) – 100 PPM
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Methane (CH₄) – 2.5% (50% LEL)
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Oxygen (O₂) – 18.5%
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Nitrogen – Balance
This configuration is designed specifically for oxygen-deficiency threshold validation below OSHA’s 19.5% standard.
Gas Composition Overview
H₂S 25 PPM / CO 100 PPM / CH₄ 2.5% (50% LEL) / O₂ 18.5%
Gas Count: 4
Balance Gas: Nitrogen
The 18.5% oxygen level creates a controlled deficiency environment for alarm trigger verification without simulating extreme oxygen displacement conditions.
Cylinder Configuration
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116L (4.0 Cubic Feet) Aluminum Cylinder
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1000 PSI Fill Pressure
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C-10 Valve
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Reactive Gas Mixture
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Custom Mix Production
The 1000 PSI pressure rating offers extended calibration volume while remaining compatible with common fixed-flow C-10 regulators used in centralized calibration stations.
Operational Use Case
This blend supports:
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Facility-wide confined space programs
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Centralized calibration benches
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Scheduled fleet detector servicing
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Industrial hygiene compliance audits
With 2.5% methane (50% LEL), combustible sensor verification is performed at a controlled explosive threshold simulation.
CO at 100 PPM supports low-alarm calibration requirements commonly set in multi-gas detectors.
Why Choose the 116L 1000 PSI Format?
Compared to 120L 1050 PSI cylinders:
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Slightly lower fill pressure
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Regulator compatibility flexibility
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High calibration cycle count
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Optimized for maintenance departments managing multiple detectors
This configuration is ideal for organizations balancing volume capacity and equipment compatibility.
Custom Blend Notice
This 18.5% oxygen mixture is produced as a custom calibration gas. Lead times may vary depending on production scheduling. Contact us to coordinate order timelines for compliance programs.
