UNE EN ISO 638-2:2022
Paper, board, pulps and cellulosic nanomaterials - Determination of dry matter content by oven-drying method - Part 2: Suspensions of cellulosic nanomaterials (ISO 638-2:2022)
Papel, cartón, pastas y nanomateriales celulósicos. Determinación del contenido en materia seca mediante el método de secado en estufa. Parte 2: Suspensiones de nanomateriales celulósicos. (ISO 638-2:2022).
| Označení normy: | UNE EN ISO 638-2:2022 |
| Počet stran: | 18 |
| Vydáno: | 2022-10-26 |
| Status: | Norma |
| Počet stran (Španělsky): | 17 |
UNE EN ISO 638-2:2022
This document specifies an oven-drying method for the determination of the dry matter content in suspensions of cellulosic nanomaterials. The procedure is applicable to cellulosic nanomaterial suspensions which do 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 cellulosic nanomaterial suspensions samples taken for chemical and physical tests in the laboratory, when a concurrent determination of dry matter content is required. NOTE 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.