Metrohm Inline Dialysis Manual do Utilizador descarregar pdf (Página 21)

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3 Installation

IC equipment: Dialysis

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3.4 Conditioning the dialysis system

Prior to the first analysis, the dialysis cell with dialysis membrane in place

and all capillaries must be rinsed with ultrapure water.

Setting the injection valve

Set the injection valve to the FILL position in the software.

Putting both peristaltic pumps into operation

￭ Immerse the aspiration capillary in the acceptor solution

(degassed ultrapure water).

￭ Use the software to switch on both peristaltic pumps.

￭ Adjust the contact pressure on both peristaltic pumps (see the

chapter "Installing the peristaltic pump" in the manual for the

ion chromatograph or the Sample Processor).

Conditioning the dialysis system

￭ Rinse the dialysis system with ultrapure water for 20 min.

￭ Check whether equal amounts of solution are emerging from

both feed lines to the waste container.

￭ Check whether all capillary connections are tight.

If liquid is escaping somewhere, then tighten the corresponding

connection or redo the connection.

￭ Check whether any air bubbles remain trapped in the dialysis cell.

If air bubbles are trapped in the cell, then unscrew the PEEK capil-

lary and the PTFE capillary, (3-3) and (3-6), from the outlets of the

dialysis cell and wait until the air bubbles have escaped. After-

wards, tighten the capillaries to the dialysis cell again.

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Metrohm Inline Dialysis Manual do Utilizador Página 21