Metrohm 899 Coulometer - Manual (Page 6)

Table of contents
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭
899 Coulometer
3.8 Connecting a sample changer to the remote connec-
tor ........................................................................................ 27
4 Coulometric titration 28
4.1 Principle of coulometry according to Karl Fischer .......... 28
4.2 Working with water standards ......................................... 29
4.2.1 Certified water standards ....................................................... 29
4.2.2 Practical recommendations .................................................... 29
4.3 Sample addition .................................................................. 31
4.3.1 Size of the sample size ........................................................... 31
4.3.2 Working with liquid samples .................................................. 32
4.3.3 Working with solid samples ................................................... 32
4.4 Optimum working conditions ........................................... 33
4.4.1 General ................................................................................. 33
4.4.2 Drift ...................................................................................... 33
4.4.3 Reagent replacement ............................................................. 34
4.4.4 Indicator electrode ................................................................ 34
5 Operation 35
5.1 Switching the instrument on and off ............................... 35
5.2 Fundamentals of operation ............................................... 36
5.2.1 The keypad ............................................................................ 36
5.2.2 Structure of the dialog windows ............................................ 36
5.2.3 Navigating in the dialog ......................................................... 37
5.2.4 Entering text and numbers ..................................................... 37
5.2.5 Selecting from a selection list ................................................. 38
5.3 Formula editor .................................................................... 39
5.4 Methods .............................................................................. 40
5.4.1 Method templates ................................................................. 40
5.4.2 Loading a method template ................................................... 40
5.4.3 Saving a method ................................................................... 41
5.4.4 Exporting a method ............................................................... 42
5.5 Control ................................................................................. 43
5.6 Sample data ........................................................................ 44
5.6.1 Entering sample data in the main dialog ................................ 44
5.6.2 Requesting sample data at the start of the determination ...... 45
5.7 Sample table ....................................................................... 45
5.7.1 General ................................................................................. 45
5.7.2 Editing the sample data ......................................................... 47
5.7.3 Sending the sample size from a balance ................................. 49
5.8 Carrying out a determination ............................................ 49
5.9 Live modifications .............................................................. 52
5.9.1 Editing the sample data of the running determination ............ 52
5.9.2 Editing the sample table while a determination is running ...... 53