Metrohm 787 KF Titrino - Manual (Page 19)

2.3 Tutorial
787 KF Titrino
15
2.3.3 Karl Fischer titration
• Select the "KFT" mode: Press repeatedly
until the display shows
• Accept this mode with
The instrument is in the KFT mode and the titration
cell is ready for operation.
3 ×
2 ×
• Check briefly that the titer just determined has also
been adopted: Press , branch to the
group "calculation" with and then press
two times more to display the following
inquiry.
• Exit the inquiry by pressing twice.
Now prepare your sample and titrate it.
Result calculation and unit of the result
The result is calculated by the following formula:
divisor smplsize
factor titer ) blank ) KFR ( volume (
) content ( water
Ч
Ч Ч −
=
2 × <1> • Change the unit of the result to mg/mL: Press . The display shows: • You wish to have your result in mg/mL. Press repeatedly until "mg/ml" appears in the
<1>
• Change the unit of the result to mg/mL: Press
. The display shows:
• You wish to have your result in mg/mL. Press
display.
• Press . The number of decimal places is
shown after the separator ";". The "3" flashes to show
you that you can now enter a number. Enter here,
e.g. 1 decimal place and exit the inquiry by pressing
twice.
The result is outputted in the new unit.
KFR volume 5.676 ml
KFT
KFT conditioning
KFT conditioning
titer 5.3326 mg/ml
KFT volume 3.459 ml
result unit: mg/ml;3
KFT volume 3.459 ml
result unit: %