# ISO 7238:1983 — Withdrawn and superseded ISO standards For ISO 7238:1983, item title is Butter — Determination of pH of the serum — Potentiometric method; status code is 9599; successor is ISO 7238:2004 | ISO/WD 7238; withdrawn / published date is 1983-12-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 7238:1983 _(verified: appears in the quote below)_ - **Item title:** Butter — Determination of pH of the serum — Potentiometric method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 7238:2004 | ISO/WD 7238 - **Withdrawn / published date:** 1983-12-01 _(verified: appears in the quote below)_ ## What the source says > 13882,IS,,ISO 7238:1983,Butter — Determination of pH of the serum — Potentiometric method,Beurre — Détermination du pH de la phase aqueuse — Méthode potentiométrique,1983-12-01,1,['67.100.20'],ISO/TC 34/SC 5,9599,,"[40468,13883]","['en','fr']",2,

Specifies a method for measuring the potential difference between a glass electrode and a reference electrode in the serum separated from melted butter. Is applicable to all types of butter. The sampling shall be made according to ISO 707. The value measured is expressed as pH unit.

## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).