Dynamic Rinses; E0 Standard Potential - Radiometer Analytical TitraLab 870 Reference Manual

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Dynamic rinses

E0 standard
potential
Page 102
Dynamic rinses are performed by a SAC850 or SAC950 Sample
Changers if the Dynamic rinsing module is installed on the sample
changer.
A Dynamic rinse performed in a Park or Rinse beaker consists of the
following operations:
1. The electrode are positioned above the Park or Rinse beaker.
2. The electrodes are dipped into the beaker. The beaker is emptied
to a waste in the same time. At the end, the electrodes are
located in the emptied beaker at their downmost position.
3. The electrodes are washed with rinse solution (usually demineral-
ised water) then start to move up under rinsing. At the end, the
electrodes are located above a beaker filled with rinse solution
and some remaining impurities.
4. Steps 2 and 3 can be repeated up to 8 times as up to 9 dynamic
rinses can be programmed. Steps 2 and 3 are performed under
stirring.
A Dynamic rinse performed in a Sample beaker consists of the follow-
ing operations:
1. The electrodes are dipped into the Sample beaker. The beaker is
emptied to a waste in the same time. At the end, the electrodes
are located in the emptied beaker at their downmost position.
2. The electrodes move up and are washed in the same time with
rinse solution (usually demineralised water). At the end, the elec-
trodes are located above a beaker filled with rinse solution and
some remaining impurities.
3. The sample beaker is emptied to a waste.
4. A last rinsing of the electrodes and delivery tips is carried out. At
the end, the electrodes are located above a nearly emptied
beaker containing a little solvent that was used to flush the elec-
trodes and delivery tips.
5. Steps 1 to 3 can be repeated up to 8 times as up to 9 dynamic
rinses can be programmed. Steps 1 to 3 are performed under
stirring.
Refer to "Direct ISE measurement method - definition", page
TitraLab 870 Reference Manual
95.