# ISO 6588-2:2020 — Withdrawn and superseded ISO standards

For ISO 6588-2:2020, item title is Paper, board and pulps — Determination of pH of aqueous extracts — Part 2: Hot extraction; status code is 9599; successor is ISO 6588-2:2021; withdrawn / published date is 2020-03-04, recorded from its source on 2026-08-05.

- **Identifier:** ISO 6588-2:2020 _(verified: appears in the quote below)_
- **Item title:** Paper, board and pulps — Determination of pH of aqueous extracts — Part 2: Hot extraction _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 6588-2:2021
- **Withdrawn / published date:** 2020-03-04 _(verified: appears in the quote below)_

## What the source says

> 77947,IS,,ISO 6588-2:2020,"Paper, board and pulps — Determination of pH of aqueous extracts — Part 2: Hot extraction","Papier, carton et pâtes — Détermination du pH des extraits aqueux — Partie 2: Extraction à chaud",2020-03-04,3,"['85.060','85.040']",ISO/TC 6,9599,[59784],[83251],"['en','fr']",7,"<p>This document specifies a method for the determination of the pH-value defined by the electrolytes extractable by hot water from a sample of paper, board or pulp.</p><p>This document is applicable to all kinds of paper, board and pulp.</p><p>As the quantity of extractable ionic material approaches zero, as in the case of highly purified pulps, the precision of the method becomes poor because 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).