# ISO 13347-2:2004 — Withdrawn and superseded ISO standards For ISO 13347-2:2004, item title is Industrial fans — Determination of fan sound power levels under standardized laboratory conditions — Part 2: Reverberant room method; status code is 9599; successor is ISO 13347-2:2025; withdrawn / published date is 2004-08-17, recorded from its source on 2026-08-05. - **Identifier:** ISO 13347-2:2004 _(verified: appears in the quote below)_ - **Item title:** Industrial fans — Determination of fan sound power levels under standardized laboratory conditions — Part 2: Reverberant room method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 13347-2:2025 - **Withdrawn / published date:** 2004-08-17 _(verified: appears in the quote below)_ ## What the source says > 29752,IS,,ISO 13347-2:2004,Industrial fans — Determination of fan sound power levels under standardized laboratory conditions — Part 2: Reverberant room method,Ventilateurs industriels — Détermination des niveaux de puissance acoustique des ventilateurs dans des conditions de laboratoire normalisées — Partie 2: Méthode de la salle réverbérante,2004-08-17,1,"['23.120','17.140.20']",ISO/TC 117,9599,,[87806],"['en','fr']",22,"
ISO 13347-2:2004 gives a detailed description of reverberant room methods for the determination of fan sound power levels. It is for use under standardized laboratory conditions and recognises that tests in situ are subject to increased uncertainty. These test procedure ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).