# ISO 13909-7:2016 — Withdrawn and superseded ISO standards For ISO 13909-7:2016, item title is Hard coal and coke — Mechanical sampling — Part 7: Methods for determining the precision of sampling, sample preparation and testing; status code is 9599; successor is ISO 13909-7:2025; withdrawn / published date is 2016-06-23, recorded from its source on 2026-08-05. - **Identifier:** ISO 13909-7:2016 _(verified: appears in the quote below)_ - **Item title:** Hard coal and coke — Mechanical sampling — Part 7: Methods for determining the precision of sampling, sample preparation and testing _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 13909-7:2025 - **Withdrawn / published date:** 2016-06-23 _(verified: appears in the quote below)_ ## What the source says > 63913,IS,,ISO 13909-7:2016,"Hard coal and coke — Mechanical sampling — Part 7: Methods for determining the precision of sampling, sample preparation and testing","Houille et coke — Échantillonnage mécanique — Partie 7: Méthodes pour la détermination de la fidélité de l'échantillonnage, de la préparation de l'échantillon et de l'essai",2016-06-23,2,"['73.040','75.160.10']",ISO/TC 27/SC 4,9599,[1932],[87042],['en'],43,"
In ISO 13909-7:2016, formulae are developed which link the variables that contribute to overall sampling precision. Methods are described for estimating overall precision and for deriving values for primary increment variance which can be used to modify the sampling scheme to ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).