6 Operation
K-375 / K-376 / K-377
Operation Manual, Version E
75
Buret functions
Select the buret function to be performed:
∙ Prepare,
∙ Discharge, or
∙ Dose
Press
START
to start the selected buret function.
NOTE
If more than one buret is connected to the instru-
ment, the respective buret unit (Acid or Base) can
also be selected. An additional buret for a base can
be connected to the device (e.g. for back titrations)
and will be detected automatically during power-on
of the instrument.
Pump calibration
Select the pump to be calibrated (H
2
O, NaOH or
H
3
BO
3
).
Enter the target “Dose volume”, e.g. 50 mL.
Press
START
to start the calibration procedure.
Measure the actually dosed volume and enter it as
calibration volume in the displayed screen. Repeat
the calibration procedure, until the measured and
the dosed volume correspond.
An acceptable difference at 50 mL is ±5 mL.
NOTE
H
2
O and NaOH can be dosed into the sample
tube and then poured into a graduated cylinder for
measurement.
The H
3
BO
3
can be dosed directly into the receiving
vessel and then poured into a graduated cylinder.
