Metrohm 760 Sample Changer - Manual (Page 23)

3.5 The Methods
760 Sample Changer, Introduction
20
3.5 The Methods
All methods enable the dosing of auxiliary solutions before the ti-
tration if a 765 or a 776 Dosimat is used. The dosing volume is to
be defined in the Dosimat. The Sample Changer will start the dis-
tribution via a remote line.
The following titration instruments can be used with the 760 Sam-
ple Changer: all of the Titrino models (701, 702, 716, 718, 719,
720, 736, 751, 758, 784, and 785) and the Titroprocessors. Simple
measuring series may be performed as well instead of titrations.
The supported Metrohm meters are: 691 and 713 pH-Meter, 692
pH/Ion Meter, 712 Conductometer.
In each method all rack positions will be processed. After the
treatment of the last sample the special beaker (highest rack posi-
tion) is moved to the tower and the lift will be lowered to work posi-
tion immersing the electrode for rinsing or conditioning.
Method 1 (for exact sequence, see Appendix, p. 25)
Plain working procedure without rinsing
Procedure:
1. move the sample beaker to the tower
2. run lift to work position
3. switch on stirrer
4. start dosing device
5. wait 10 seconds
6. start titrator
7. await end of determination
8. switch off stirrer
9. run lift to shift position