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Shop by Brand - Single Gas Mix - Multi-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 81-0013RK-05 Replacement Calibration Gas - 50% LEL Methane (58 Liter)

    RKI Instruments 81-0013RK-05 Replacement Calibration Gas - 50% LEL Methane (58 Liter)

    $125.00
    50% LEL Methane Calibration Gas, Balance Nitrogen, 58 Liter Aluminum Cylinder (RKI Instruments 81-0013RK-05 Equivalent).
  2. RKI Instruments 81-0076RK Replacement Zero Air - 20.9% Oxygen (17 Liter)

    RKI Instruments 81-0076RK Replacement Zero Air - 20.9% Oxygen (17 Liter)

    $50.00
    20.9% Oxygen (Zero Air) Calibration Gas, Balance Nitrogen, 17 Liter Steel Cylinder (RKI Instruments 81-0076RK Equivalent).
  3. 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).
  4. RKI Instruments 81-0191RK-02 Replacement Calibration Gas - 10 PPM Chlorine (58 Liter)

    RKI Instruments 81-0191RK-02 Replacement Calibration Gas - 10 PPM Chlorine (58 Liter)

    $335.00
    10 PPM Chlorine Calibration Gas, Balance Nitrogen, 58 Liter Aluminum Cylinder (RKI Instruments 81-0191RK-02 Equivalent).
  5. RKI Instruments 81-0018RK Replacement Calibration Gas - 50% LEL Isobutane (17 Liter)

    RKI Instruments 81-0018RK Replacement Calibration Gas - 50% LEL Isobutane (17 Liter)

    $50.00
    50% LEL Isobutane Calibration Gas, Balance Air, 17 Liter Steel Cylinder (RKI Instruments 81-0018RK Equivalent).
  6. RKI Instruments 81-0078RK-03 Replacement Calibration Gas - 99.999% by volume Nitrogen (103 Liter)

    RKI Instruments 81-0078RK-03 Replacement Calibration Gas - 99.999% by volume Nitrogen (103 Liter)

    $145.00
    99.999% by volume Nitrogen Calibration Gas, 103 Liter Steel Cylinder (RKI Instruments 81-0078RK-03 Equivalent).
  7. RKI Instruments 81-0090RK Replacement - 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (17L)

    RKI Instruments 81-0090RK Replacement - 50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen (17L)

    $50.00
    50 PPM Carbon Monoxide, 50% LEL Methane, 12% Oxygen, Balance Nitrogen, 17 Liter Steel Cylinder (RKI Instruments 81-0090RK Equivalent).
  8. RKI Instruments 81-0073RK Replacement Calibration Gas - 15% by volume Carbon Dioxide (17 Liter)

    RKI Instruments 81-0073RK Replacement Calibration Gas - 15% by volume Carbon Dioxide (17 Liter)

    $50.00
    15% by volume Carbon Dioxide Calibration Gas, Balance Nitrogen, 17 Liter Steel Cylinder (RKI Instruments 81-0073RK Equivalent).
  9. RKI Instruments 81-0007RK-01 Replacement Calibration Gas - 15% LEL Hexane (34 Liter)

    RKI Instruments 81-0007RK-01 Replacement Calibration Gas - 15% LEL Hexane (34 Liter)

    $62.00
    15% LEL Hexane Calibration Gas, Balance Air, 34 Liter Steel Cylinder (RKI Instruments 81-0007RK-01 Equivalent).
  10. RKI Instruments 81-0094RK Replacement Calibration Gas - 50% LEL Isobutane (0.9% vol.) / 12% Oxygen (17 Liter)

    RKI Instruments 81-0094RK Replacement Calibration Gas - 50% LEL Isobutane (0.9% vol.) / 12% Oxygen (17 Liter)

    $50.00
    50% LEL Isobutane (0.9% vol.) / 12% Oxygen Calibration Gas, Balance Nitrogen, 17 Liter Steel Cylinder (RKI Instruments 81-0094RK Equivalent).
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Items 11 to 20 of 151 total

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Brand Replacement
  1. Biosystems
  2. BW Technologies
  3. Drager
  4. Gas Clip Technologies
  5. GfG
  6. Industrial Scientific
  7. Lumidor
  8. MSA
  9. RAE Systems
  10. RKI Instruments
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  2. Multi-Gas Mix
Select Single Gas
  1. Air Zero
  2. Ammonia
  3. Carbon Dioxide
  4. Carbon Monoxide
  5. Chlorine
  6. Hexane
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Select Multiple Gases
  1. Carbon Monoxide
  2. Hexane
  3. Hydrogen Sulfide
  4. Isobutane
  5. Methane
  6. Oxygen
  7. Pentane
  8. Sulfur Dioxide
Cylinder Size
  1. 17 Liter Steel (35)
  2. 29 Liter Aluminum (13)
  3. 34 Liter Steel (44)
  4. 58 Liter Aluminum (23)
  5. 103 Liter Steel (36)
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