# ISO 310:1981 — Withdrawn and superseded ISO standards

For ISO 310:1981, item title is Manganese ores — Determination of hygroscopic moisture content in analytical samples — Gravimetric method; status code is 9599; successor is ISO 310:1992; withdrawn / published date is 1981-08-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 310:1981 _(verified: appears in the quote below)_
- **Item title:** Manganese ores — Determination of hygroscopic moisture content in analytical samples — Gravimetric method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 310:1992
- **Withdrawn / published date:** 1981-08-01 _(verified: appears in the quote below)_

## What the source says

> 4248,IS,,ISO 310:1981,Manganese ores — Determination of hygroscopic moisture content in analytical samples — Gravimetric method,Minerais de manganèse — Détermination de l'humidité des échantillons pour analyse — Méthode gravimétrique,1981-08-01,2,['73.060.20'],ISO/TC 65,9599,,[4249],"['en','fr']",1,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).