Metrohm 896 Professional Detector – Amperometry - Manual (Page 32)

4.6 Deaerating the measuring cell
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2.896.0020 896 Professional Detector – Amperometry
￭ Observe the measuring cell: No liquid should emerge from the
body of the measuring cell.
If the measuring cell is leaking:
– Remove the measuring cell from the measuring cell holder.
– Remove all capillaries and cables.
– Check the seating of the pressure screw of the working
electrode and retighten it.
– Restore the capillary connections.
– Reinsert the electrode cables.
– Reinsert the measuring cell.
– Repeat the test.
4 Test at normal flow
￭ In the program part Manual of MagIC Net™, raise the flow of
the high pressure pump to 1.0 mL/min.
￭ Observe the measuring cell: No liquid should emerge from the
body of the measuring cell.
4.6 Deaerating the measuring cell
The cell must be deaerated in order to ensure that it contains no air bub-
bles.
The measuring cell must be deaerated after the installation and after each
subsequent opening of the cell.
Proceed as follows:
Deaerating the measuring cell
Prerequisites:
￭ The high pressure pump is switched on and pumps the eluent through
the IC system to the measuring cell.
￭ The measuring cell is switched off.
1 Deaerate the reference electrode chamber
￭ Unscrew the nut on the RE connector and remove it.
￭ Lift out the reference electrode.
￭ Wait until the reference electrode chamber has filled with eluent.
￭ Reinsert the reference electrode. Wipe up any emerging eluent
with a cloth.
￭ Screw the nut on the reference electrode connector back on
tightly.