# ISO 15681-2:2003 — Withdrawn and superseded ISO standards

For ISO 15681-2:2003, item title is Water quality — Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) — Part 2: Method by continuous flow analysis (CFA); status code is 9599; successor is ISO 15681-2:2018; withdrawn / published date is 2003-12-10, recorded from its source on 2026-08-05.

- **Identifier:** ISO 15681-2:2003 _(verified: appears in the quote below)_
- **Item title:** Water quality — Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) — Part 2: Method by continuous flow analysis (CFA) _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 15681-2:2018
- **Withdrawn / published date:** 2003-12-10 _(verified: appears in the quote below)_

## What the source says

> 35051,IS,,ISO 15681-2:2003,Water quality — Determination of orthophosphate and total phosphorus contents by flow analysis (FIA and CFA) — Part 2: Method by continuous flow analysis (CFA),Qualité de l'eau — Dosage des orthophosphates et du phosphore total par analyse en flux (FIA et CFA) — Partie 2: Méthode par analyse en flux continu (CFA),2003-12-10,1,['13.060.50'],ISO/TC 147/SC 2,9599,,[66474],"['en','fr']",16,"<p>ISO 15681-2:2003 specifies CFA methods for the determination of orthophosphate in the mass concentration range from 0,01 mg/l to 1,00 mg/l P, and total phosphorus in the mass concentration range from 0,10 mg/l to 10,0 mg/l P. The method includes the digestion of organic phosphoru

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).