Hanna Instruments HI 903 - Manual (Page 129)

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 - 1 0