Metrohm 726 Titroprocessor - Manual (Page 104)

7.1 General
726 Titroprocessor, Instructions for use 98 98
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