# ISO 7936:1992 — Withdrawn and superseded ISO standards For ISO 7936:1992, item title is Hard coal — Determination and presentation of float and sink characteristics — General directions for apparatus and procedures; status code is 9599; successor is ISO 7936:2022; withdrawn / published date is 1992-04-16, recorded from its source on 2026-08-05. - **Identifier:** ISO 7936:1992 _(verified: appears in the quote below)_ - **Item title:** Hard coal — Determination and presentation of float and sink characteristics — General directions for apparatus and procedures _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 7936:2022 - **Withdrawn / published date:** 1992-04-16 _(verified: appears in the quote below)_ ## What the source says > 14906,IS,,ISO 7936:1992,Hard coal — Determination and presentation of float and sink characteristics — General directions for apparatus and procedures,Houille — Détermination et présentation des caractéristiques de flottation et d'enfoncement — Principes directeurs relatifs à l'appareillage et aux modes opératoires,1992-04-16,1,['73.040'],ISO/TC 27/SC 1,9599,,[79648],['en'],19,"
Describes sampling, preliminary treatment, test procedure using relative density separation methods, presentation of results. A general procedure for a centrifugal float and sink test is given in Annex A. A typical procedure for treating and testing a sample of raw coal is described in Annex B. Some practical hints ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).