# ISO 20289:2018 — Withdrawn and superseded ISO standards

For ISO 20289:2018, item title is Surface chemical analysis — Total reflection X-ray fluorescence analysis of water; status code is 9599; successor is ISO 20289:2025; withdrawn / published date is 2018-03-15, recorded from its source on 2026-08-05.

- **Identifier:** ISO 20289:2018 _(verified: appears in the quote below)_
- **Item title:** Surface chemical analysis — Total reflection X-ray fluorescence analysis of water _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 20289:2025
- **Withdrawn / published date:** 2018-03-15 _(verified: appears in the quote below)_

## What the source says

> 67511,IS,,ISO 20289:2018,Surface chemical analysis — Total reflection X-ray fluorescence analysis of water,Analyse chimique des surfaces — Analyse par fluorescence de rayons X en réflexion totale d'eau,2018-03-15,1,['71.040.40'],ISO/TC 201/SC 10,9599,,[88039],['en'],19,"<p>ISO 20289:2018 provides a chemical method for technicians working with Total Reflection X-ray Fluorescence (TXRF) instrumentation to perform measurements of water samples, according to good practices, with a defined degree of accuracy and precision. Target users are identified among laboratories performing routine analysis of large numbers of samples, which also comply with ISO/IEC 17025.</p><p>ISO 20289:2018 specifies a m

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).