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Applications of ALOT columns

For the application of ALOT columns any carrier gas can be used. Mainly hydrogen, helium and nitrogen are employed. It is recommended that proper carrier gas purification is used since the adsorbent in the ALOT column will act as a trap for all volatile impurities introduced in the carrier gas lines. A typical practical experiment to verify whether the GC-system is clean is the following Condition the ALOT column for 30 minutes on its maximal isothermal operation temperature, followed by cooling down to ambient. [Pg.248]

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