# ISO 821:1975 — Withdrawn and superseded ISO standards

For ISO 821:1975, item title is Particle boards — Determination of dimensions of test pieces; status code is 9599; successor is ISO 9424:1989; withdrawn / published date is 1975-06-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 821:1975 _(verified: appears in the quote below)_
- **Item title:** Particle boards — Determination of dimensions of test pieces _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 9424:1989
- **Withdrawn / published date:** 1975-06-01 _(verified: appears in the quote below)_

## What the source says

> 5173,IS,,ISO 821:1975,Particle boards — Determination of dimensions of test pieces,Panneaux de particules — Détermination des dimensions des éprouvettes,1975-06-01,1,['79.060.20'],ISO/TC 89,9599,,[17125],"['en','fr']",1,

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).