# ISO/TR 4869-3:1989 — Withdrawn and superseded ISO standards For ISO/TR 4869-3:1989, item title is Acoustics — Hearing protectors — Part 3: Simplified method for the measurement of insertion loss of ear-muff type protectors for quality inspection purposes; status code is 9599; successor is ISO 4869-3:2007; withdrawn / published date is 1989-11-30, recorded from its source on 2026-08-05. - **Identifier:** ISO/TR 4869-3:1989 _(verified: appears in the quote below)_ - **Item title:** Acoustics — Hearing protectors — Part 3: Simplified method for the measurement of insertion loss of ear-muff type protectors for quality inspection purposes _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 4869-3:2007 - **Withdrawn / published date:** 1989-11-30 _(verified: appears in the quote below)_ ## What the source says > 10852,TR,,ISO/TR 4869-3:1989,Acoustics — Hearing protectors — Part 3: Simplified method for the measurement of insertion loss of ear-muff type protectors for quality inspection purposes,"Acoustique — Protecteurs individuels contre le bruit — Partie 3: Méthode simplifiée pour le mesurage de l'affaiblissement acoustique du type serre-tête, destinée aux contrôles de qualité",1989-11-30,1,['13.340.20'],ISO/TC 43/SC 1,9599,,[38910],"['en','fr']",7,"
The procedure specified may be used to investigate production spreads of performance as part of type approval or certification procedures and the change of performance with age. It is not intended to be used as the basic test for type approval purpo ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).