The passive pre-heater is an optional part. It can be used to adapt the eluent to the column temperature, before the eluent enters the column.

The passive pre-heater is for use with flow rates > 50 µL/min, in particular with 1 mm ID columns used in the flow range of 50-100 µL/min.

Parts required

  • Passive pre-heater

  • 2 screws

Tools required

Screwdriver, Torx T10

Follow these steps

  1. Place the passive pre-heater in the desired position.

    Inside the column chamber, two different positions are available.

  2. TIP

    The passive pre-heater can be mounted in any of the two positions that are shown below. It can be orientated as required, with the outlet capillary pointing downwards or upwards, depending on the column inlet position.

    3. Figure: Mounting positions for the passive pre-heater

  3. Align the screw holes of the passive pre-heater with the screw holes on the pre-heater mounting position.

  4. With the screwdriver, tighten the two screws and washers to mount the passive pre-heater inside the column chamber.

  5. Connect the outlet capillary of the passive pre-heater to the column inlet.

  6. Connect the inlet capillary of the passive pre-heater to the autosampler or a column switching valve. When connecting the passive pre-heater to the autosampler, route the capillary through the lower capillary guide.

Figure: Capillary guide for routing the capillary to the autosampler

TIP

The temperature of the passive pre-heater is not controlled. Therefore, it is not required to set up the passive pre-heater in the chromatography data system.