SIST EN ISO 638-2:2022 PDF

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)

Title (English):

SIST 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)

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 17
Publication date:: May 13, 2022
ICS:: 85.040
Technical committee:: VPK - Pulp, paper, board and products

Document language:

enru

Delivery time:1–7 days

Price:66 €

Description (English):

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.

Technical details

SKU: SIST EN ISO 638-2:2022

Abstract

Overview

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" - specifies an oven-drying method for measuring the dry matter content of suspensions of cellulosic nanomaterials (CNM). The procedure is intended for laboratory samples used in chemical and physical testing and applies when no appreciable quantities of volatiles other than water are present at 105 °C ± 2 °C. This is the CEN-endorsed European version of ISO 638-2:2022.

Key topics and requirements

Scope and applicability: Designed for CNM suspensions (including nanocellulose) that do not contain volatile non-water components at drying temperature. Measures total dry matter, including dissolved solids.
Critical note: If only the cellulosic fraction free of dissolved solids is required, dissolved solids must be removed (e.g., washing or dialysis) prior to drying, taking care to retain all cellulosic material.
Principle: Weigh test specimens before and after oven-drying to constant mass; calculate dry matter content from the mass change.
Apparatus:
- Balance readable to 0.1 mg.
- Water‑vapour‑proof containers with tight lids (glass or suitable plastic).
- Drying oven capable of maintaining 105 °C ± 2 °C, ventilated.
- Desiccator for cooling samples.
Sampling and specimen preparation: Ensure representative specimens; filtration to concentrate dilute suspensions is not recommended because it can cause loss of CNM.
Data and documentation: Procedure includes calculation methods (Annex A), precision information (Annex B), and required test report content.

Applications and typical users

Laboratories performing chemical analyses and physical testing of cellulosic nanomaterial suspensions.
Quality control teams in pulp, paper and nanocellulose manufacturing for monitoring water content and concentration of suspensions.
Researchers characterizing CNM materials and needing reliable dry matter or moisture data.
Regulatory and standards bodies referencing standardised methods for inter-lab comparability.

Practical uses include converting suspension concentration into mass-based results for chemical assays, calculating water content, and ensuring consistent sample preparation for downstream tests.

Related standards

ISO 638-1 - dry matter/moisture in solid paper, board, pulp and CNM
ISO 287 - moisture content of paper and board (lot averages)
ISO 4119 - stock concentration of aqueous pulp suspensions
ISO 801 (all parts) - saleable mass determination

Keywords: EN ISO 638-2:2022, dry matter content, oven-drying method, cellulosic nanomaterials, CNM suspensions, moisture content, laboratory testing, nanocellulose.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and requirements

Scope and applicability: Designed for CNM suspensions (including nanocellulose) that do not contain volatile non-water components at drying temperature. Measures total dry matter, including dissolved solids.
Critical note: If only the cellulosic fraction free of dissolved solids is required, dissolved solids must be removed (e.g., washing or dialysis) prior to drying, taking care to retain all cellulosic material.
Principle: Weigh test specimens before and after oven-drying to constant mass; calculate dry matter content from the mass change.
Apparatus:
- Balance readable to 0.1 mg.
- Water‑vapour‑proof containers with tight lids (glass or suitable plastic).
- Drying oven capable of maintaining 105 °C ± 2 °C, ventilated.
- Desiccator for cooling samples.
Sampling and specimen preparation: Ensure representative specimens; filtration to concentrate dilute suspensions is not recommended because it can cause loss of CNM.
Data and documentation: Procedure includes calculation methods (Annex A), precision information (Annex B), and required test report content.

Applications and typical users

Laboratories performing chemical analyses and physical testing of cellulosic nanomaterial suspensions.
Quality control teams in pulp, paper and nanocellulose manufacturing for monitoring water content and concentration of suspensions.
Researchers characterizing CNM materials and needing reliable dry matter or moisture data.
Regulatory and standards bodies referencing standardised methods for inter-lab comparability.

Practical uses include converting suspension concentration into mass-based results for chemical assays, calculating water content, and ensuring consistent sample preparation for downstream tests.

Related standards

ISO 638-1 - dry matter/moisture in solid paper, board, pulp and CNM
ISO 287 - moisture content of paper and board (lot averages)
ISO 4119 - stock concentration of aqueous pulp suspensions
ISO 801 (all parts) - saleable mass determination

Keywords: EN ISO 638-2:2022, dry matter content, oven-drying method, cellulosic nanomaterials, CNM suspensions, moisture content, laboratory testing, nanocellulose.

SIST EN ISO 638-2:2022 PDF

Technical details

Abstract

Overview

Key topics and requirements

Applications and typical users

Related standards

Related standards

Abstract

Overview

Key topics and requirements

Applications and typical users

Related standards

Related standards

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