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  • 66 Liter-Carbon Monoxide 50 ppm/ Methane 2.0% (40% LEL)/ Oxygen 20.9%/ Nitrogen

    • Carbon Monoxide (CO) 50 PPM / Methane (CH₄) 2.0% (40% LEL) / Oxygen (O₂) 20.9% / Nitrogen BAL Calibration Gas – 66L 1150 PSI C-10 Aluminum (Non-Reactive)

    E-Gas Depot

    $147.40
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    SKU:
    39-2750-FX66
    Availability:
    3-5 Business Days + shipping time
    Weight:
    20.00 Ounces
    Width:
    2.90 (in)
    Height:
    10.60 (in)
    Depth:
    2.90 (in)
    Size:
    66L
    Gas Composition:
    CO / CH4 / O2
    Cylinder Material:
    Aluminum
    Cylinder Pressure:
    1150 PSI
    Gas Reactivity:
    Non-Reactive
    Carbon Monoxide (CO) Concentration:
    50 PPM
    Methane (CH₄) Concentration:
    2.0% (40% LEL)
    Oxygen (O2) Concentration:
    20.9%
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    Product Description

    66L 4 Gas Calibration Gas – 40% LEL Methane, CO, O₂ (Baseline Atmosphere Cylinder)

    This 66L 4 gas calibration gas is designed for standard multi-gas detector calibration under atmospheric conditions, featuring 50 PPM Carbon Monoxide (CO), 2.0% Methane (40% LEL), and 20.9% Oxygen (O₂) balanced in nitrogen.

    Unlike typical 50% LEL calibration gases, this mixture provides a 40% LEL methane concentration, allowing for lower-range LEL sensor validation and controlled calibration scenarios.

    Gas Composition

    • Carbon Monoxide (CO): 50 PPM (Standard Level)
    • Methane (CH₄): 2.0% (40% LEL)
    • Oxygen (O₂): 20.9% (Atmospheric Baseline)
    • Balance Gas: Nitrogen (N₂)

    Cylinder Specifications

    • Cylinder Size: 66L
    • Pressure: 1150 PSI
    • Valve: C-10
    • Material: Aluminum
    • Reactivity: Non-Reactive

    Applications

    • LEL sensor calibration (partial-range testing)
    • Multi-gas detector validation
    • Controlled methane calibration scenarios
    • Industrial safety monitoring
    • Routine field calibration

    Why 40% LEL Calibration Gas Matters

    • Enables lower-range LEL calibration testing
    • Provides more conservative sensor validation
    • Useful where full 50% LEL is not required
    • Helps verify detector response across graduated LEL levels
    • Complements standard 50% LEL calibration gases

    40% vs 50% LEL Calibration

    • 50% LEL (2.5% CH₄) → standard industry calibration
    • 40% LEL (this SKU) → lower-range / controlled calibration

    This is a precision variation, not a replacement.

    Oxygen Context

    • 20.9% (this SKU) → normal atmosphere
    • 19.0% → early deficiency
    • 18.0% → critical
    • 17.0% → severe

    66L Cylinder Advantage

    • Balanced for field portability and runtime
    • Ideal for routine calibration programs
    • Compatible with C-10 systems
    • Widely used in daily operations
     

    Other Details

    Warranty 48 months

    Product Videos

    Custom Field

    Size 66L
    Gas Composition CO / CH4 / O2
    Cylinder Material Aluminum
    Cylinder Pressure 1150 PSI
    Gas Reactivity Non-Reactive
    Carbon Monoxide (CO) Concentration 50 PPM
    Methane (CH₄) Concentration 2.0% (40% LEL)
    Oxygen (O2) Concentration 20.9%

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