Preparation of the saturator column

The pressure at the outlet to the saturator must be measured. This may be done either

They do not cause any back pressure on the saturator column and it is also easy to quantitatively remove the trapped material.

In order to lower the mass transport occurring by diffusion, a capillary may be placed after the saturator column (figure 6b).

A suitable gas-control system is required to ensure a constant and selected flow through the saturator column.