Metrohm 726 Titroprocessor - Manual (Page 141)

88. . Command Reference Command Reference
726 Titroprocessor, Instructions for use 135 135
It is preferable to select a relative stop volume when the
primary objective is to limit the consumption of reagent.
Fill. rate
Buret fill rate
0.01 mL/min…150 mL/min | max.
The buret is automatically filled when the titration ends. The
maximum fill rate will depend on the size of the buret cylin-
der used.
Buret cylinder max. fill rate
1 mL 3 mL/min
2 mL 6 mL/min
5 mL 15 mL/min
10 mL 30 mL/min
20 mL 60 mL/min
50 mL 150 mL/min
A value up to 150 mL/min can be entered even for small
buret cylinders. When the method is executed, however,
the dosing rate will automatically be reduced to the largest
possible value. Select 'max' whenever possible, except with
viscous reagent solutions which could cause underpres-
sure in the cylinder if the filling rate is too fast (formation of
bubbles!).
Meas.val
Measured value as a discontinuation criteria
with DET_PH: pH -20 … 20 | off
with DET_U, DET_IPOL: -2000 … 2000 mV | off
with DET_UPOL: -200 … 200 µA | off
The measured value at which the titration is discontinued.
EP#
Number of equivalence points
0…9 | off
The titration is discontinued as soon as the pre-set number
of equivalence points is recognized. In principle, only 9
equivalence points can be evaluated. In the setting
'EP# 0' the titration is discontinued after the start condi-
tions are executed (initial dosing). 'off' means, the num-
ber of equivalence points found is not taken into account
for the discontinuation of a titration.
Stop time
Absolute titration duration
1…9999 s | off
The titration is discontinued on expiry of the pre-set stop
time.