Hanna Instruments HI 904 - Methods Optimization

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 Titration Speed ...............................................................................................9-4
9.1.1.3 Signal Averaging ..............................................................................................9-4
9.1.2 Termination Parameters .............................................................................. 9-5
9.1.2.1 Stability Time ..................................................................................................9-5
9.1.2.2 Drift Stop Termination Criteria ...........................................................................9-5
9.1.2.2.1 Relative Drift Stop ...................................................................................9-5
9.1.2.2.2 Absolute Drift Stop ..................................................................................9-6
9.1.3 Method Options .......................................................................................... 9-6
9.1.3.1 Pre-Analysis Stir Time ......................................................................................9-6
9.1.3.2 Stirring Speed..................................................................................................9-6
9.1.3.3 Background Drift Rate Entry.............................................................................9-6
9.2 The Sample ........................................................................................... 9-7
9.2.1 Proper Sampling Procedure ......................................................................... 9-7
9.2.2 Determining the Optimal Sample Size .......................................................... 9-7
9.2.3 Solid Samples............................................................................................. 9-7
9.2.4 Liquid Samples ........................................................................................ 9-8