# ISO 6740:1985 — Withdrawn and superseded ISO standards

For ISO 6740:1985, item title is Dried whey — Determination of nitrate and nitrite contents — Method by cadmium reduction and spectrometry; status code is 9599; successor is ISO 14673-3:2001 | ISO 14673-1:2001 | ISO 14673-2:2001; withdrawn / published date is 1985-09-12, recorded from its source on 2026-08-05.

- **Identifier:** ISO 6740:1985 _(verified: appears in the quote below)_
- **Item title:** Dried whey — Determination of nitrate and nitrite contents — Method by cadmium reduction and spectrometry _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 14673-3:2001 | ISO 14673-1:2001 | ISO 14673-2:2001
- **Withdrawn / published date:** 1985-09-12 _(verified: appears in the quote below)_

## What the source says

> 13197,IS,,ISO 6740:1985,Dried whey — Determination of nitrate and nitrite contents — Method by cadmium reduction and spectrometry,Lactosérum en poudre — Détermination des teneurs en nitrates et en nitrites — Méthode par réduction au cadmium et spectrométrie,1985-09-12,1,['67.100.99'],ISO/TC 34/SC 5,9599,,"[31423,31421,31422]","['en','fr']",6,"<p>The principle of determination consists in dissolving the dried whey in warm water, precipitating the fat and proteins, filtering and reducing the nitrate in a portion of the filtrate to nitrite by means of copperized cadmium. The sampling shall be made as specified in ISO 707. A figure shows the apparatus for nitrate reduction.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).