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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. BW Technologies Replacement Zero Air - 20.9% Oxygen (103 Liter)

    BW Technologies CG-ZERO Replacement Zero Air - 20.9% Oxygen (103 Liter)

    $139.00
    20.9% Oxygen (Zero Air) Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (BW Technologies CG-ZERO Equivalent).
  2. MSA Replacement Zero Air - 20.9% Oxygen (103 Liter)

    MSA 801050 Replacement Zero Air THC < 1 PPM (103 Liter)

    $139.00
    20.9% Oxygen (Zero Air) Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (MSA 801050 Equivalent).
  3. Industrial Scientific Replacement Zero Air - 20.9% Oxygen (103 Liter)

    Industrial Scientific 1810-1584 Replacement Zero Air - 20.9% Oxygen (103 Liter)

    $139.00
    20.9% Oxygen (Zero Air) Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (Industrial Scientific 18101584 Equivalent). RFID tag is not included.
  4. RKI Instruments Replacement Zero Air - 20.9% Oxygen (103 Liter)

    RKI Instruments 81-0076RK-03 Replacement Zero Air - 20.9% Oxygen (103 Liter)

    $139.00
    20.9% Oxygen (Zero Air) Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0076RK-03 Equivalent).
  5. Draeger 4557019 Replacement Calibration Gas - 50% LEL (2.5% vol.) Methane (103 Liter)

    Draeger 4557019 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 (Draeger 4557019 Equivalent).
  6. MSA 804532 Replacement Calibration Gas - 50% LEL (0.75% vol.) Pentane (103 Liter)

    MSA 804532 Replacement Calibration Gas - 50% LEL (0.75% vol.) Pentane (103 Liter)

    $145.00
    50% LEL (0.75% vol.) Pentane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (MSA 804532 Equivalent).
  7. MSA 493579 Replacement Calibration Gas - 0.6% by volume Propane (103 Liter)

    MSA 493579 Replacement Calibration Gas - 0.6% by volume Propane (103 Liter)

    $145.00
    0.6% by volume Propane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (MSA 493579 Equivalent).
  8. MSA 479857 Replacement Calibration Gas - 20.8% by volume Oxygen (103 Liter)

    MSA 479857 Replacement Calibration Gas - 20.8% by volume Oxygen (103 Liter)

    $145.00
    20.8% by volume Oxygen Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (MSA 479857 Equivalent).
  9. MSA 809242 Replacement Calibration Gas - 100 PPM Carbon Monoxide (103 Liter)

    MSA 809242 Replacement Calibration Gas - 100 PPM Carbon Monoxide (103 Liter)

    $145.00
    100 PPM Carbon Monoxide Calibration Gas, Balance Air, 103 Liter Steel Cylinder (MSA 809242 Equivalent).
  10. MSA 473180 Replacement Calibration Gas - 300 PPM Carbon Monoxide (103 Liter)

    MSA 473180 Replacement Calibration Gas - 300 PPM Carbon Monoxide (103 Liter)

    $145.00
    300 PPM Carbon Monoxide Calibration Gas, Balance Air, 103 Liter Steel Cylinder (MSA 473180 Equivalent).
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