# ISO 7760:1986 — Withdrawn and superseded ISO standards For ISO 7760:1986, item title is Photographic processing waste — Determination of hydroquinone content — Spectrophotometric method; status code is 9599; successor is ISO/DIS 7760 | ISO 7760:2001; withdrawn / published date is 1986-04-17, recorded from its source on 2026-08-05. - **Identifier:** ISO 7760:1986 _(verified: appears in the quote below)_ - **Item title:** Photographic processing waste — Determination of hydroquinone content — Spectrophotometric method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/DIS 7760 | ISO 7760:2001 - **Withdrawn / published date:** 1986-04-17 _(verified: appears in the quote below)_ ## What the source says > 14624,IS,,ISO 7760:1986,Photographic processing waste — Determination of hydroquinone content — Spectrophotometric method,Déchets des traitements photographiques — Dosage de l'hydroquinone — Méthode spectrophotométrique,1986-04-17,1,"['37.040.30','13.030.30']",ISO/TC 42,9599,,"[20061,32495]","['en','fr']",3,

The method can be applied to samples containing hydroquinone in the concentration range of 200 to 4000 g/l. Aminophenols and phenylenediamines should also be determined by this method.

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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).