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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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RKI Instruments 81-0068RK Replacement Calibration Gas - 100 PPM Carbon Monoxide (17 Liter)
$50.00100 PPM Carbon Monoxide Calibration Gas, Balance Nitrogen, 17 Liter Steel Cylinder (RKI Instruments 81-0068RK Equivalent). -
RKI Instruments 81-0000RK Replacement Calibration Gas - 1000 PPM Hydrogen (17 Liter)
$50.001000 PPM Hydrogen Calibration Gas, Balance Air, 17 Liter Steel Cylinder (RKI Instruments 81-0000RK Equivalent). -
RKI Instruments 81-0010RK Replacement Calibration Gas - 10% LEL Methane (17 Liter)
$50.0010% LEL Methane Calibration Gas, Balance Air, 17 Liter Steel Cylinder (RKI Instruments 81-0010RK Equivalent). -
RKI Instruments 81-0101RK Replacement Calibration Gas - 50% LEL Methane (2.5% vol.) / 17% Oxygen (17 Liter)
$50.0050% LEL Methane (2.5% vol.) / 17% Oxygen Calibration Gas, Balance Nitrogen, 17 Liter Steel Cylinder (RKI Instruments 81-0101RK Equivalent). -
RKI Instruments 81-0004RK Replacement Calibration Gas - 50% LEL Propane (17 Liter)
$50.0050% LEL Propane Calibration Gas, Balance Air, 17 Liter Steel Cylinder (RKI Instruments 81-0004RK Equivalent). -
RKI Instruments 81-0070RK Replacement Calibration Gas - 2000 PPM Carbon Dioxide (17 Liter)
$50.002000 PPM Carbon Dioxide Calibration Gas, Balance Nitrogen, 17 Liter Steel Cylinder (RKI Instruments 81-0070RK Equivalent). -
RKI Instruments 81-0091RK Replacement - 100 PPM Carbon Monoxide, 25% LEL Pentane, 19% Oxygen, Balance Nitrogen (17L)
$50.00100 PPM Carbon Monoxide, 25% LEL Pentane, 19% Oxygen, Balance Nitrogen, 17 Liter Steel Cylinder (RKI Instruments 81-0091RK Equivalent). -
RKI Instruments 81-0065RK Replacement Calibration Gas - 100 PPM Carbon Monoxide (17 Liter)
$50.00100 PPM Carbon Monoxide Calibration Gas, Balance Air, 17 Liter Steel Cylinder (RKI Instruments 81-0065RK Equivalent). -
RKI Instruments 81-0009RK Replacement Calibration Gas - 40% LEL Hexane (17 Liter)
$50.0040% LEL Hexane Calibration Gas, Balance Air, 17 Liter Steel Cylinder (RKI Instruments 81-0009RK Equivalent). -
RKI Instruments 81-0019RK Replacement Calibration Gas - 10% by volume Isobutane (17 Liter)
$50.0010% by volume Isobutane Calibration Gas, Balance Nitrogen, 17 Liter Steel Cylinder (RKI Instruments 81-0019RK Equivalent).
