Hanna-instruments HI 903 Manuel d'utilisateur Page 129

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9-1
METHODS OPTIMIZATION
Chapter 9. Contents
9 OPTIMIZATION ..................................................................................... 9-3
9.1 Titrator Settings ................................................................................... 9-3
9.1.1 Control Parameters.................................................................................... 9-3
9.1.1.1 Endpoint Potential and Polarization Current ........................................................9-3
9.1.1.2 Dosing Parameters ..........................................................................................9-4
9.1.1.2.1 Minimum Dose ........................................................................................9-4
9.1.1.2.2 Maximum Dose .......................................................................................9-4
9.1.1.3 Timed Increment ............................................................................................9-5
9.1.1.4 Start Mode .....................................................................................................9-6
9.1.1.5 Signal Averaging ..............................................................................................9-6
9.1.1.6 Flow Rate .......................................................................................................9-6
9.1.2 Termination Parameters .............................................................................. 9-6
9.1.2.1 Stability Time ..................................................................................................9-6
9.1.2.2 Drift Stop Termination Criteria ...........................................................................9-6
9.1.2.2.1 Relative Drift Stop ...................................................................................9-7
9.1.2.2.2 Absolute Drift Stop ..................................................................................9-7
9.1.3 Method Options .......................................................................................... 9-8
9.1.3.1 Pre-Dispensing Amount ....................................................................................9-8
9.1.3.2 Pre-Analysis Stir Time ......................................................................................9-8
9.1.3.3 Stirring Speed..................................................................................................9-8
9.1.3.4 Background Drift Rate Entry.............................................................................9-8
9.2 The Sample ........................................................................................... 9-9
9.2.1 Proper Sampling Procedure ......................................................................... 9-9
9.2.2 Determining the Optimal Sample Size .......................................................... 9-9
9.2.3 Solid Samples............................................................................................. 9-10
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