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carrier gas |
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carrier gas (karˑ·ē·er gasˑ), n a chemically nonreactive gas, such as helium or nitrogen that carries vapor through the column of a gas-liquid chromatograph; known as the mobile phase. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The carrier gas (nitrogen) is passed through silica gel and a zeolite desiccant tube for drying. The carrier gas flow rate in the permeate chamber must be very low (in order to present a detectable carbon dioxide concentration at the permeate outlet) and have a perfect mixing flow pattern. The choice of a carrier gas normally depends on the type of detector used. |
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