User Manual

7.1 General
726 Titroprocessor, Instructions for use
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7 Titration and measuring modes
7.1 General
The 726 Titroprocessor carries out all the individual titration processes
automatically and controls them itself. The various individual steps can be
varied to a large extent and adapted to the specific requirements of an
analysis. The titration and measuring modes of the 726 Titroprocessor have
been optimized for various applications.
A list is given below of the various aspects of a mode together with the cor-
responding variants:
Reagent addition
incremental reagent addition with constant volume steps
incremental reagent addition with dynamically variable volume steps
regulated, drift-controlled reagent addition
Measuring system
potentiometric ion measurement with combined sensors or separate
measuring and reference electrodes
calibration of potentiometric measuring systems
(bi)amperometric indication by means of a polarized electrode and pre-
selected polarization voltage
(bi)voltametric indication by means of a polarized electrode and prese-
lected polarization current
temperature measurement with a Pt100 or Pt1000 sensor
Titration control
titration with automatic recognition of inflection point / equivalence point
titration to a preset endpoint
Equivalence point recognition
selectable criterion for recognition of qualitatively different inflection
points / equivalence points
endpoint window for selective limitation of the equivalence point
recognition to selected measuring ranges
fixed endpoint recognition at pre-selected value
Calculations
freely editable calculation formulas for calculating results
access to user-defined permanently stored 'common variables'
use of system variables with detailed data of a titration