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We've made it easy for you to find your equivalent calibration gas. Just enter your part number in the search box (top right of every page). Or use the filters in the left column to narrow in on your calibration gas. Save up to 50% of the cost of brand name gases. We supply identical mixtures with ISO and NIST certification.

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  1. Lumidor GAS123 Replacement Calibration Gas - 50% LEL (2.5% vol.) Methane (103 Liter)

    Lumidor GAS123 Replacement Calibration Gas - 50% LEL (2.5% vol.) Methane (103 Liter)

    $145.00
    50% LEL (2.5% vol.) Methane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (Lumidor GAS123 Equivalent).
  2. RAE Systems 600-0071-030 Replacement Calibration Gas - 20% by volume Methane (103 Liter)

    RAE Systems 600-0071-030 Replacement Calibration Gas - 20% by volume Methane (103 Liter)

    $145.00
    20% by volume Methane Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (RAE Systems 600-0071-030 Equivalent).
  3. RKI Instruments 81-0080RK-03 Replacement Calibration Gas - 50 PPM Methane (103 Liter)

    RKI Instruments 81-0080RK-03 Replacement Calibration Gas - 50 PPM Methane (103 Liter)

    $145.00
    50 PPM Methane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0080RK-03 Equivalent).
  4. RKI Instruments 81-0010RK-03 Replacement Calibration Gas - 10% LEL Methane (103 Liter)

    RKI Instruments 81-0010RK-03 Replacement Calibration Gas - 10% LEL Methane (103 Liter)

    $145.00
    10% LEL Methane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0010RK-03 Equivalent).
  5. RKI Instruments 81-0086RK-03 Replacement Calibration Gas - 5000 PPM Methane (103 Liter)

    RKI Instruments 81-0086RK-03 Replacement Calibration Gas - 5000 PPM Methane (103 Liter)

    $145.00
    5000 PPM Methane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0086RK-03 Equivalent).
  6. RKI Instruments 81-0079RK-03 Replacement Calibration Gas - 500 PPM Methane (103 Liter)

    RKI Instruments 81-0079RK-03 Replacement Calibration Gas - 500 PPM Methane (103 Liter)

    $145.00
    500 PPM Methane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0079RK-03 Equivalent).
  7. RKI Instruments 81-0012RK-03 Replacement Calibration Gas - 50% LEL Methane (103 Liter)

    RKI Instruments 81-0012RK-03 Replacement Calibration Gas - 50% LEL Methane (103 Liter)

    $145.00
    50% LEL Methane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0012RK-03 Equivalent).
  8. RKI Instruments 81-0101RK-03 Replacement Calibration Gas - 50% LEL Methane (2.5% vol.) / 17% Oxygen (103 Liter)

    RKI Instruments 81-0101RK-03 Replacement Calibration Gas - 50% LEL Methane (2.5% vol.) / 17% Oxygen (103 Liter)

    $145.00
    50% LEL Methane (2.5% vol.) / 17% Oxygen Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0101RK-03 Equivalent).
  9. RKI Instruments 81-0085RK-03 Replacement Calibration Gas - 1000 PPM Methane (103 Liter)

    RKI Instruments 81-0085RK-03 Replacement Calibration Gas - 1000 PPM Methane (103 Liter)

    $145.00
    1000 PPM Methane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0085RK-03 Equivalent).
  10. Industrial Scientific 1810-1378 Replacement Calibration Gas - 50% LEL Methane (103 Liter)

    Industrial Scientific 1810-1378 Replacement Calibration Gas - 50% LEL Methane (103 Liter)

    $145.00
    50% LEL Methane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (Industrial Scientific 18101378 Equivalent). RFID tag is not included.
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