# ISO 1928:2020 — Withdrawn and superseded ISO standards For ISO 1928:2020, item title is Coal and coke — Determination of gross calorific value; status code is 9599; successor is ISO 1928:2025; withdrawn / published date is 2020-10-05, recorded from its source on 2026-08-05. - **Identifier:** ISO 1928:2020 _(verified: appears in the quote below)_ - **Item title:** Coal and coke — Determination of gross calorific value _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 1928:2025 - **Withdrawn / published date:** 2020-10-05 _(verified: appears in the quote below)_ ## What the source says > 75883,IS,,ISO 1928:2020,Coal and coke — Determination of gross calorific value,Charbon et coke — Détermination du pouvoir calorifique supérieur,2020-10-05,4,['75.160.10'],ISO/TC 27/SC 5,9599,[41592],[86999],['en'],62,"
This document specifies a method for the determination of the gross calorific value of a solid mineral fuel at constant volume and at the reference temperature of 25 °C in a combustion vessel calorimeter calibrated by combustion of certified benzoic acid.
The result obtained is the gross calorific value of the analysis sample at constant volume with all the water of the combustion products as liquid water. In practice, fuel is burned at constant (atmospheric) pressure ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).