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  • 120 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 – 120L 1050 PSI C-10 Aluminum (Non-Reactive)

    E-Gas Depot

    $213.40
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    SKU:
    39-2750-FX120
    Availability:
    3-5 Business Days + shipping time
    Weight:
    48.00 Ounces
    Width:
    3.50 (in)
    Height:
    15.00 (in)
    Depth:
    3.50 (in)
    Size:
    120L
    Gas Composition:
    CO / CH4 / O2
    Cylinder Material:
    Aluminum
    Cylinder Pressure:
    1050 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

    120L 4 Gas Calibration Gas – 40% LEL Methane, CO, O₂ (Primary Field Cylinder)

    This 120L 4 gas calibration gas is designed for multi-gas detector calibration under standard atmospheric conditions, featuring 50 PPM Carbon Monoxide (CO), 2.0% Methane (40% LEL), and 20.9% Oxygen (O₂) balanced in nitrogen.

    As a 40% LEL methane calibration gas, this mixture allows technicians to perform controlled, lower-range LEL validation, making it ideal for calibration programs requiring graduated sensor response testing.

    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: 120L
    • Pressure: 1050 PSI
    • Valve: C-10
    • Material: Aluminum
    • Reactivity: Non-Reactive

    Applications

    • LEL sensor calibration (partial-range testing)
    • Multi-gas detector validation
    • Graduated methane calibration programs
    • Industrial hygiene monitoring
    • Field calibration operations

    Why This 120L 40% LEL Cylinder is the Key SKU

    • Provides lower-range LEL calibration capability
    • Ideal for multi-point calibration strategies
    • Balanced for field deployment and runtime
    • Covers CO, LEL, and O₂ sensors in one cylinder
    • Compatible with C-10 regulated systems

    40% vs 50% LEL Calibration

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

    This SKU is used when precision and range testing matter, not just standard calibration.

    Oxygen Context

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

    120L Field Advantage

    • Most practical size for daily calibration work
    • Reduces cylinder replacement frequency
    • More efficient than smaller cylinders
    • More portable than bulk systems
     

    Other Details

    Warranty 48 months

    Product Videos

    Custom Field

    Size 120L
    Gas Composition CO / CH4 / O2
    Cylinder Material Aluminum
    Cylinder Pressure 1050 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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