# ISO 8423:1991/Cor 1:1993 — Withdrawn and superseded ISO standards

For ISO 8423:1991/Cor 1:1993, item title is Sequential sampling plans for inspection by variables for percent nonconforming (known standard deviation) — Technical Corrigendum 1; status code is 9599; successor is ISO 8423:2008 | ISO 3951-5:2006; withdrawn / published date is 1993-09-02, recorded from its source on 2026-08-05.

- **Identifier:** ISO 8423:1991/Cor 1:1993 _(verified: appears in the quote below)_
- **Item title:** Sequential sampling plans for inspection by variables for percent nonconforming (known standard deviation) — Technical Corrigendum 1 _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 8423:2008 | ISO 3951-5:2006
- **Withdrawn / published date:** 1993-09-02 _(verified: appears in the quote below)_

## What the source says

> 22629,IS,Cor,ISO 8423:1991/Cor 1:1993,Sequential sampling plans for inspection by variables for percent nonconforming (known standard deviation) — Technical Corrigendum 1,Plans d'échantillonnage progressif pour le contrôle par mesures des pourcentages de non conformes (écart-type connu) — Rectificatif technique 1,1993-09-02,1,['03.120.30'],ISO/TC 69/SC 5,9599,,"[41992,39294]","['en','fr']",1,<p>Amends values in table 1 and subclause C.2.3 and equations in subclauses 3.2.2.1 and 3.2.3.1.</p>

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).