# ISO 9300:2005 — Withdrawn and superseded ISO standards

For ISO 9300:2005, item title is Measurement of gas flow by means of critical flow Venturi nozzles; status code is 9599; successor is ISO 9300:2022; withdrawn / published date is 2005-08-19, recorded from its source on 2026-08-05.

- **Identifier:** ISO 9300:2005 _(verified: appears in the quote below)_
- **Item title:** Measurement of gas flow by means of critical flow Venturi nozzles _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 9300:2022
- **Withdrawn / published date:** 2005-08-19 _(verified: appears in the quote below)_

## What the source says

> 34272,IS,,ISO 9300:2005,Measurement of gas flow by means of critical flow Venturi nozzles,Mesure de débit de gaz au moyen de Venturi-tuyères en régime critique,2005-08-19,2,['17.120.10'],ISO/TC 30/SC 2,9599,[16956],[77401],"['en','fr']",38,"<p>ISO 9300:2005 specifies the geometry and method of use (installation in a system and operating conditions) of critical flow Venturi nozzles (CFVN) used to determine the mass flow-rate of a gas flowing through a system. It also gives the information necessary for calculating the flow-rate and its associated uncertainty. It is applicable to Venturi nozzles in which the gas flow accelerates to the critical velocity at the throat (this being equal to the l

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).