Columns and Fittings
Liners/adapters and inserts, general
Liners/adapters and inserts, general
A liner/adapter is installed from below, inside the oven; it serves both as an adapter to mate the particular column to the inlet or detector and to provide correct internal volume for proper operation.
Inserts are used with inlets only, and, when required, are installed from above, at the top of the inlet; these are discussed specifically later in this section (see Inlet inserts).
In general, the analysis to be performed determines the column to be used. The column then dictates hardware required for the inlet and detector (liner, insert, adapter, jet (FID or NPD)).
Note:
A correctly designed 1/4•inchpacked glass column requires no liners since the column ends themselves serve this purpose.
The appropriate liner/adapter, and insert if required, must be installed prior to installing a column.
Tables 1•2and 1•3summarize hardware required for various combinations of inlets, columns, and detectors.
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