Columns and Fittings

Inlet inserts

1.Assemble a brass nut and graphite ferrule onto the liner/adapter.

2.Insert the liner/adapter straight into the detector base as far as possible.

3.Holding the liner/adapter in this position, tighten the nut finger•tight.

4.Use a wrench to tighten the nut an additional 1/4 turn.

5.Install the column; then heat the oven, inlet, and detector to desired operating temperatures and, only if necessary to stop leaks, tighten fittings further.

Inlet inserts

Inserts are used in inlets, and can be installed from the top of the particular inlet.

Packed column inlet inserts

Figure 1-8

Flared End

Glass Insert for Packed Column Inlet Liner

Assuming the correct inlet liner is installed, a glass insert is installed as described on the next page.

25