Procedures
1. Sample preparation
1.1 Preparation of drying container
Place container in the drying oven at 100 ± 5°C until constant weight (1 - 2 h). Cool
in a desiccator for about 30 min and weigh (W1). For liquid or semisolid sample, prepare drying
container with 15 - 20 g acid washed sand and a stirring rod.
Aluminum moisture cans Vacuum oven
20
1.2 Preparation of sample
Grind or blend sample until homogenous. Analyse sample immediately after
preparation. If sample cannot be analysed on the same day, keep in screw-cap bottle in a
freezer. For samples intended for analysis of vitamins or other labile nutrients, flush sample with
nitrogen before storing.