# ISO 638-1:2021 — Withdrawn and superseded ISO standards

For ISO 638-1:2021, item title is Paper, board, pulps and cellulosic nanomaterials — Determination of dry matter content by oven-drying method — Part 1: Materials in solid form; status code is 9599; successor is ISO 638-1:2022; withdrawn / published date is 2021-05-06, recorded from its source on 2026-08-05.

- **Identifier:** ISO 638-1:2021 _(verified: appears in the quote below)_
- **Item title:** Paper, board, pulps and cellulosic nanomaterials — Determination of dry matter content by oven-drying method — Part 1: Materials in solid form _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 638-1:2022
- **Withdrawn / published date:** 2021-05-06 _(verified: appears in the quote below)_

## What the source says

> 77399,IS,,ISO 638-1:2021,"Paper, board, pulps and cellulosic nanomaterials — Determination of dry matter content by oven-drying method — Part 1: Materials in solid form","Papiers, cartons, pâtes et nanomatériaux cellulosiques — Détermination de la teneur en matières sèches par séchage à l'étuve — Partie 1: Matériaux sous forme solide",2021-05-06,1,"['85.060','85.040']",ISO/TC 6,9599,[42267],[83614],"['en','fr']",10,"<p>This document specifies an oven-drying method for the determination of 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.</p><p>It is also applicable to the determination of

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).