NF EN 20638

<p>ISO 638:2008 specifies an oven-drying method for the determination of the dry matter in paper, board and pulp.</p> <p>The procedure is applicable to paper, board and pulp which does not contain any appreciable quantities of materials other than water that are volatile at the temperature of 105 °C ± 2 °C. It is used, for example, in the case of pulp, paper and board samples taken for chemical and physical tests in the laboratory, when a concurrent determination of dry matter content is required.</p> <p>This method is not applicable to the determination of the dry matter content of slush pulp or to the determination of the saleable mass of pulp lots.</p>