# ISO 6588-1:2012 — Withdrawn and superseded ISO standards For ISO 6588-1:2012, item title is Paper, board and pulps — Determination of pH of aqueous extracts — Part 1: Cold extraction; status code is 9599; successor is ISO 6588-1:2020; withdrawn / published date is 2012-10-29, recorded from its source on 2026-08-05. - **Identifier:** ISO 6588-1:2012 _(verified: appears in the quote below)_ - **Item title:** Paper, board and pulps — Determination of pH of aqueous extracts — Part 1: Cold extraction _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 6588-1:2020 - **Withdrawn / published date:** 2012-10-29 _(verified: appears in the quote below)_ ## What the source says > 59783,IS,,ISO 6588-1:2012,"Paper, board and pulps — Determination of pH of aqueous extracts — Part 1: Cold extraction","Papier, carton et pâtes — Détermination du pH des extraits aqueux — Partie 1: Extraction à froid",2012-10-29,2,"['85.060','85.040']",ISO/TC 6,9599,[41368],[77946],"['en','fr']",7,"
ISO 6588-1:2012 specifies a method for the determination of the pH-value defined by the electrolytes extractable by cold water from a sample of paper, board or pulp.
ISO 6588-1:2012 is applicable to all types of paper, board and pulp.
As the quantity of extractable ionic material approaches zero, as in the case of highly purified pulps, the precision of the method becomes poor becau ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).