# ISO 6145-4:1986 — Withdrawn and superseded ISO standards

For ISO 6145-4:1986, item title is Gas analysis — Preparation of calibration gas mixtures — Dynamic volumetric methods — Part 4: Continuous injection method; status code is 9599; successor is ISO 6145-4:2004; withdrawn / published date is 1986-10-09, recorded from its source on 2026-08-05.

- **Identifier:** ISO 6145-4:1986 _(verified: appears in the quote below)_
- **Item title:** Gas analysis — Preparation of calibration gas mixtures — Dynamic volumetric methods — Part 4: Continuous injection method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 6145-4:2004
- **Withdrawn / published date:** 1986-10-09 _(verified: appears in the quote below)_

## What the source says

> 12379,IS,,ISO 6145-4:1986,Gas analysis — Preparation of calibration gas mixtures — Dynamic volumetric methods — Part 4: Continuous injection method,Analyse des gaz — Préparation des mélanges de gaz pour étalonnage — Méthodes volumétriques dynamiques — Partie 4: Méthode d'injection continue,1986-10-09,1,['71.040.40'],ISO/TC 158,9599,,[36478],"['en','fr']",5,"<p>Describes the preparation of mixtures by continuos mixing of volume flows, whereby the precision of the concentration of each constituent in the range from 10 000 to 10 ppm (V/V) amounts to about 5%. Includes a practical example with figure.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).