Product Description
66L 4-Gas Calibration Gas – LPG Equivalent LEL with 19.0% Oxygen
This 66L reactive 4-gas calibration cylinder is designed for confined space and industrial gas detector calibration where oxygen-deficiency and LPG-equivalent combustible conditions must be verified.
The blend includes 25 PPM hydrogen sulfide, 50 PPM carbon monoxide, 1.62% methane representing 50% LEL propane equivalent, and 19.0% oxygen, providing a realistic simulation of hazardous atmospheric conditions.
Gas Composition
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Hydrogen Sulfide (H₂S): 25 PPM
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Carbon Monoxide (CO): 50 PPM
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Methane (CH₄): 1.62% (50% LEL LPG / Propane Equivalent)
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Oxygen (O₂): 19.0%
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Nitrogen: Balance
The 19.0% oxygen concentration allows verification of oxygen-deficiency alarms commonly used in confined space safety programs.
Cylinder Specifications
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Capacity: 66L
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Fill Pressure: 1150 PSI
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Valve Type: C-10
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Cylinder Material: Aluminum
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Gas Type: Reactive
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Approximate Volume: 2.3 Cubic Feet
The 1150 PSI fill supports extended calibration cycles across multiple portable gas detection instruments.
Typical Applications
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Confined space entry programs
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Industrial safety compliance testing
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Oil & gas monitoring
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Wastewater facilities
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Manufacturing plant safety programs
Compatible with C-10 demand flow regulators used across major portable 4-gas detector platforms.
Why This Calibration Blend
• Simulates oxygen-deficient atmospheres
• Verifies LPG-equivalent combustible alarms
• Confirms toxic gas sensor response
• Supports multi-sensor confined space monitors
Custom gas mixtures and alternate LEL equivalents are available upon request.