Hanna Instruments HI 903 - Page 130

9-2
METHODS OPTIMIZATION
9.2.4 Liquid Samples ........................................................................................ 9-11
9.2.5 Sample Preparation Techniques ................................................................... 9-12
9.2.5.1 Internal Extractions .........................................................................................9-12
9.2.5.2 Dilutions ..........................................................................................................9-12
9.2.5.3 External Dissolution .........................................................................................9-13
9.2.5.4 External Extractions .........................................................................................9-13
9.2.5.5 Homogenization ..............................................................................................9-14
9.2.5.6 Heating...........................................................................................................9-14
9.3 Karl Fischer Reagent System ................................................................ 9-15
9.3.1 Reagent System Classification ................................................................... 9-15
9.3.1.1 One-Component Reagent Systems ..................................................................9-15
9.3.1.2 Two-Component Reagent Systems ..................................................................9-15
9.3.1.3 Reagents for Aldehydes and Ketones ...............................................................9-15
9.3.2 Choosing and Modifying a Solvent ............................................................... 9-16
9.3.3 Water Standards ......................................................................................... 9-16
9.3.4 Standardizing the Titrant ............................................................................. 9-17