BUCHI KjelSampler K-377 - Manual (Page 102)

6 Operation
102 K-375/376/377 Operation Manual, Version B
Parameters for Boric acid titration with colori-
metric sensor
Select
Boric acid titration for the parameter
“Titration type“. The volume of the boric acid to be
dosed into the receiving vessel can be specified
and the titration solution can be selected from the
Volumetric solutions list (see chapter ”6.8.2
Volumetric Solutions”).
Select Colorimetric for the parameter “Sensor
type“. Make sure the boric acid and the indicator
solution are prepared according to the instructions
in the application note!
Furthermore the stirrer speed for the titration and a
titration start volume can be specified. The speci-
fied titration start volume is dosed into the receiving
vessel at the beginning of the titration.
With the parameter “Titration algorithm” one of
two available algorithms for the titration can be
selected:
Optimal: This algorithm has been optimized with
respect to the duration of the titration and the accu-
racy of the result. It is recommended for samples
with a higher nitrogen content.
Normal: This algorithm has been optimized with
respect to the accuracy of the result but will require
a longer time than the optimal algorithm. The
normal algorithm is recommended for samples with
a very low nitrogen content.