STANDARD
ISO 638-2:2021
Issue date: 2021 05 06
Paper, board, pulps and cellulosic nanomaterials — Determination of dry matter content by oven-drying method — Part 2: Suspensions of cellulosic nanomaterials
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 1: ISO 638-1[1] specifies the dry matter content in paper, board, pulp and cellulosic nanomaterials in solid form, which all can be produced from virgin and/or recycled materials; ISO 287[2] specifies the determination of moisture content of a lot of paper and board; ISO 4119[3] specifies the determination of stock concentration of aqueous pulp suspensions; ISO 801 (all parts)[4] specifies the determination of 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.
General information on ISO 638-2:2021
Timeline
An overview of the development of ISO 638-2:2021 from 1978 til today.
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ISO 638-2:20222022 03 08 Standard ISO 638-2:2022, Edition: 2022 03 08Paper, board, pulps and cellulosic nanomaterials — Determination of dry matter content by oven-dryin...
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ISO 638-2:20212021 05 06 Standard ISO 638-2:2021, Edition: 2021 05 06Paper, board, pulps and cellulosic nanomaterials — Determination of dry matter content by oven-dryin...
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ISO 638:20082008 09 16 Standard ISO 638:2008, Edition: 2008 09 16Paper, board and pulps — Determination of dry matter content — Oven-drying method
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ISO 638:19781978 10 01 Standard ISO 638:1978, Edition: 1978 10 01Pulps — Determination of dry matter content
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