Metrohm 787 KF Titrino - Manual (Page 19)

2.3 Tutorial
787 KF Titrino
15
2.3.3 Karl Fischer titration
<MODE>
<ENTER>
• Select the "KFT" mode: Press <MODE> repeatedly
until the display shows
• Accept this mode with <ENTER>
The instrument is in the KFT mode and the titration
cell is ready for operation.
<CALC DATA>
3 × <ENTER>
2 × <QUIT>
• Check briefly that the titer just determined has also
been adopted: Press <CALC DATA>, branch to the
group "calculation" with <ENTER> and then press
<ENTER> two times more to display the following
inquiry.
• Exit the inquiry by pressing <QUIT> 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 −
=
<UNIT>
2 × <SELECT>
<ENTER>
<1>
<ENTER>
<QUIT>
• Change the unit of the result to mg/mL: Press
<UNIT>. The display shows:
• You wish to have your result in mg/mL. Press
<SELECT> repeatedly until "mg/ml" appears in the
display.
• Press <ENTER>. 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
<QUIT> 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: %