# ISO 9599:1991 — Withdrawn and superseded ISO standards

For ISO 9599:1991, item title is Copper, lead and zinc sulfide concentrates — Determination of hygroscopic moisture in the analysis sample — Gravimetric method; status code is 9599; successor is ISO 9599:2015; withdrawn / published date is 1991-02-14, recorded from its source on 2026-08-05.

- **Identifier:** ISO 9599:1991 _(verified: appears in the quote below)_
- **Item title:** Copper, lead and zinc sulfide concentrates — Determination of hygroscopic moisture in the analysis sample — Gravimetric method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 9599:2015
- **Withdrawn / published date:** 1991-02-14 _(verified: appears in the quote below)_

## What the source says

> 17411,IS,,ISO 9599:1991,"Copper, lead and zinc sulfide concentrates — Determination of hygroscopic moisture in the analysis sample — Gravimetric method","Concentrés sulfurés de cuivre, de plomb et de zinc — Détermination de l'humidité hygroscopique dans l'échantillon pour analyse — Méthode gravimétrique",1991-02-14,1,['73.060.99'],ISO/TC 183,9599,,[63361],"['en','fr']",5,"<p>The method given is applicable to copper, lead and zinc sulfide concentrates free from volatile organic flotation reagents, e.g. kerosene, and with hygroscopic moisture contents between 0,05 % (m/m) and 2 % (m/m). It is used to correct the analysis results from the equilibrated moisture level to the dry basis. This metho

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).