Metrohm 862 Compact Titrosampler - Manual (Page 97)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 7 Parameters
862 Compact Titrosampler ￭￭￭￭￭￭￭￭ 87
fast
For fast and less critical titrations.
user
The individual titration parameters can be modified.
Note
Select the optimal titration rate when you are developing a new titra-
tion method. This parameter is suitable for virtually all titrations and
only needs adaptation in special cases.
The settings of the individual titration rates are listed in table 1, page
89.
Meas. point density
This parameter is visible only when Titration rate = user.
A small value means small volume increments, i.e. a high measuring point
density. The curve then shows all the finest details which also include
noise; this could cause unwanted equivalence points to be found. A larger
value, i.e. a smaller measuring point density, permits quicker titrations. If
you are using a dosing device with a small cylinder volume then a smaller
measuring point density value may be beneficial. However, you should
also set a smaller signal drift and a higher EP criterion at the same time.
Range 0 ... 9
Default value 4
Min. increment
This parameter is visible only when Titration rate = user.
This smallest permitted volume increment is added at the start of the titra-
tion and with steep curves in the region of the equivalence point. Very
small values should only be used if a low titrant consumption is expected;
otherwise unwanted equivalence points could be evaluated.
Range 0.05 ... 999.90 µL
Default value 10.00 µL
Max. increment
This parameter is visible only when Titration rate = user.
A maximum volume increment should be selected in the following cases:
￭ when titration consumption is very low up until the equivalence point
is reached.
￭ when a start volume is dosed up until shortly before the equivalence
point is reached.