# ISO 5814:1990 — Withdrawn and superseded ISO standards For ISO 5814:1990, item title is Water quality — Determination of dissolved oxygen — Electrochemical probe method; status code is 9599; successor is ISO 5814:2012; withdrawn / published date is 1990-03-29, recorded from its source on 2026-08-05. - **Identifier:** ISO 5814:1990 _(verified: appears in the quote below)_ - **Item title:** Water quality — Determination of dissolved oxygen — Electrochemical probe method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 5814:2012 - **Withdrawn / published date:** 1990-03-29 _(verified: appears in the quote below)_ ## What the source says > 11961,IS,,ISO 5814:1990,Water quality — Determination of dissolved oxygen — Electrochemical probe method,Qualité de l'eau — Dosage de l'oxygène dissous — Méthode électrochimique à la sonde,1990-03-29,2,['13.060.50'],ISO/TC 147/SC 2,9599,[11960],[45346],"['en','fr']",8,"

Includes a procedure by means of an electrochemical cell which is isolated from the sample by a gas permeable membrane. Depending on the type of probe employed measurement can be made either as concentration of oxygen, percentage saturation or both. The procedure is suitable for measurements made in the field and for continuous monitoring and in the laboratory. It is the preferred procedure for highly coloured and turbid wa ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).