Radiometer Analytical TitraLab 870, Reference Manual

Page: 169 / 286

Titra Lab ® TitraLab 870 Reference Manual
Page 169
Periodicity Available if Electrode calibration request = Yes or Titre = Calibrate
Maximum period of time between two calibrations. If the period of time
is exceed measurements can no longer be performed using this
electrode or reagent. A new calibration is required except if
Alarm :
Unlocked has been set in the SETUP > Access Routine mode
menu.
Enter in:
Edit electrode menu
Edit reagent menu
Range available:
1 to 999 days
Periodicity for
QC samples This is the number of samples to be placed between two successive
QC samples. When this number is reached, a QC analysis must be
run using this method except if
Alarm : Unlocked has been
set in the Setup > Access Routine mode menu.
Enter in:
QC data menu
Range available:
1 to 999 samples
pH0(25) This is the pH of the solution at 25°C at which the measured electrode
potential is equal to zero. The potential developed depends on both
electrodes; the reference and the glass. These potentials may vary to
bring about an electrode drift. This drift can be compensated by fre-
quent calibrations.
Normally the following ranges are used by default (6.850 pH and
7.200 pH)
Enter in:
Edit electrode > Results
Range available:
pH(0)25 min. = -9.000 pH to pH0(25) max.
pH0(25) max. = pH0(25) min. to 23.000 pH
pH buffer Refer to "Solution menu", page 233 .