ii
5.2.1 Cleaning Kit ................................................................................... 34
5.2.2 Cleaning Procedure ........................................................................ 35
5.3 Capacitance Filter Replacement ..............................................................36
5.4 Maintenance Packages ............................................................................ 37
6. Verification and Calibration........................................................ 38
6.1 Water Activity Verification ....................................................................... 38
6.1.1 Verification Standards ................................................................... 38
6.1.2 Verification of Calibration .............................................................. 39
6.2 Linear Offset ............................................................................................ 41
6.3 Adjusting for Weight Measurement Offset ............................................... 42
6.4 Restore Factory Defaults ......................................................................... 43
6.5 Isotherm Standard Comparison ............................................................... 44
7. Running a Test ....................................................................................... 46
7.1 Becoming Familiar with Stages ................................................................46
7.2 Moisture Analysis Toolkit Software .......................................................... 46
7.3 Running a Moisture Sorption Isotherm Test ............................................. 46
7.4 Using DDI to Investigate Glass Transition ................................................ 53
7.5 Creating a Working Isotherm ................................................................... 53
7.6 Editing a Running Isotherm Test .............................................................. 54
7.7 Running a Water Activity Test .................................................................. 55
8. Sample Preparation ........................................................................... 56
8.1 Coated and Dried Samples .......................................................................57
8.2 Low Water-Emitting Samples .................................................................. 57
8.3 Volatile Samples ..................................................................................... 58
8.4 Low Water Activity ................................................................................... 58
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