NOTE 1 ISO 638‑2 ^{[ 1 ]} specifies an oven-drying method for the determination of the dry matter content of suspensions of cellulosic nanomaterials, ISO 287^[2] specifies the determination of the moisture content of a lot of paper and board; ISO 4119^[3] specifies the determination of stock concentration of pulps; the ISO 801 series^[4] specifies the determination of the saleable mass in lots.

NOTE 2 This document determines the total dry matter content of the sample, including any dissolved solids. If only the cellulosic material content free of dissolved solids is desired, dissolved solids are removed prior to measuring the dry matter content, e.g. by washing or dialysis, taking care to retain all cellulosic material; in cases where the sample is filterable without loss of cellulosic solids, ISO 4119^[3] can be used to determine the stock consistency (content of cellulosic material in solid form).