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4.2 Maintenance

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IC equipment: Dialysis

4.2 Maintenance

The dialysis membrane may need to be replaced:

￭ if the signal intensity during dialysis decreases.

￭ if the dialysis membrane dries out.

￭ if the dialysis membrane becomes damaged as a result of depositions

or bacterial growth.

￭ if the sample channel is blocked (i.e., the sample can no longer be

pumped through the dialysis cell).

Replacing the dialysis membrane

Disassembling the dialysis cell

￭ Unscrew the four capillaries from the dialysis cell and remove the

cell from the cell holder.

￭ Remove the five screws completely with the hex key (6.2621.070)

and disassemble the dialysis cell.

￭ Remove the used dialysis membrane.

Preparing the dialysis membrane

Carry out steps 2 to 8 in Chapter 3.1 Preparing the dialysis cell on

page 6.

Connecting the dialysis cell

￭ Tighten the sample inlet capillary to the dialysis cell inlet for the

sample (3-4) using a PVDF pressure screw (6.2744.000).

￭ Tighten the sample outlet capillary to the dialysis cell outlet for

the sample (3-3) using a PVDF pressure screw (6.2744.000).

￭ Tighten the acceptor inlet capillary to the dialysis cell inlet for the

acceptor solution (3-5) using a PVDF pressure screw (6.2744.000).

￭ Tighten the acceptor outlet capillary to the dialysis cell outlet for

the acceptor solution (3-6) using a PVDF pressure screw

(6.2744.000).

Conditioning the dialysis system

(see Chapter 3.4, page 15).

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Metrohm Inline Dialysis Bedienungsanleitung Seite 26