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Shop by Brand - Multi-Gas Mix - Single Gas Mix - RKI Instruments Replacement Calibration Gas

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. RKI Instruments 81-0068RK-03 Replacement Calibration Gas - 100 PPM Carbon Monoxide (103 Liter)

    RKI Instruments 81-0068RK-03 Replacement Calibration Gas - 100 PPM Carbon Monoxide (103 Liter)

    $145.00
    100 PPM Carbon Monoxide Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0068RK-03 Equivalent).
  2. RKI Instruments 81-0000RK-03 Replacement Calibration Gas - 1000 PPM Hydrogen (103 Liter)

    RKI Instruments 81-0000RK-03 Replacement Calibration Gas - 1000 PPM Hydrogen (103 Liter)

    $145.00
    1000 PPM Hydrogen Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0000RK-03 Equivalent).
  3. RKI Instruments 81-0094RK-03 Replacement Calibration Gas - 50% LEL Isobutane (0.9% vol.) / 12% Oxygen (103 Liter)

    RKI Instruments 81-0094RK-03 Replacement Calibration Gas - 50% LEL Isobutane (0.9% vol.) / 12% Oxygen (103 Liter)

    $145.00
    50% LEL Isobutane (0.9% vol.) / 12% Oxygen Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0094RK-03 Equivalent).
  4. 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).
  5. RKI Instruments 81-0075RK-03 Replacement Calibration Gas - 10% by volume Oxygen (103 Liter)

    RKI Instruments 81-0075RK-03 Replacement Calibration Gas - 10% by volume Oxygen (103 Liter)

    $145.00
    10% by volume Oxygen Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0075RK-03 Equivalent).
  6. RKI Instruments 81-0070RK-03 Replacement Calibration Gas - 2000 PPM Carbon Dioxide (103 Liter)

    RKI Instruments 81-0070RK-03 Replacement Calibration Gas - 2000 PPM Carbon Dioxide (103 Liter)

    $145.00
    2000 PPM Carbon Dioxide Calibration Gas, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0070RK-03 Equivalent).
  7. RKI Instruments 81-0090RK-03 Replacement - 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (103L)

    RKI Instruments 81-0090RK-03 Replacement - 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (103L)

    $145.00
    50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen, 103 Liter Steel Cylinder (RKI Instruments 81-0090RK-03 Equivalent).
  8. RKI Instruments 81-0066RK-03 Replacement Calibration Gas - 200 PPM Carbon Monoxide (103 Liter)

    RKI Instruments 81-0066RK-03 Replacement Calibration Gas - 200 PPM Carbon Monoxide (103 Liter)

    $145.00
    200 PPM Carbon Monoxide Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0066RK-03 Equivalent).
  9. RKI Instruments 81-0083RK-03 Replacement Calibration Gas - 400 PPM Hexane (103 Liter)

    RKI Instruments 81-0083RK-03 Replacement Calibration Gas - 400 PPM Hexane (103 Liter)

    $145.00
    400 PPM Hexane Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0083RK-03 Equivalent).
  10. RKI Instruments 81-0000RK-33 Replacement Calibration Gas - 4000 PPM Hydrogen (103 Liter)

    RKI Instruments 81-0000RK-33 Replacement Calibration Gas - 4000 PPM Hydrogen (103 Liter)

    $145.00
    4000 PPM Hydrogen Calibration Gas, Balance Air, 103 Liter Steel Cylinder (RKI Instruments 81-0000RK-33 Equivalent).
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  1. Biosystems
  2. BW Technologies
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Select Multiple Gases
  1. Carbon Monoxide
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Cylinder Size
  1. 17 Liter Steel (35)
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  4. 58 Liter Aluminum (23)
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