# ISO 20483:2006 — Withdrawn and superseded ISO standards For ISO 20483:2006, item title is Cereals and pulses — Determination of the nitrogen content and calculation of the crude protein content — Kjeldahl method; status code is 9599; successor is ISO 20483:2013; withdrawn / published date is 2006-10-20, recorded from its source on 2026-08-05. - **Identifier:** ISO 20483:2006 _(verified: appears in the quote below)_ - **Item title:** Cereals and pulses — Determination of the nitrogen content and calculation of the crude protein content — Kjeldahl method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 20483:2013 - **Withdrawn / published date:** 2006-10-20 _(verified: appears in the quote below)_ ## What the source says > 35435,IS,,ISO 20483:2006,Cereals and pulses — Determination of the nitrogen content and calculation of the crude protein content — Kjeldahl method,Céréales et légumineuses — Détermination de la teneur en azote et calcul de la teneur en protéines brutes — Méthode de Kjeldahl,2006-10-20,1,['67.060'],ISO/TC 34/SC 4,9599,,[59162],"['en','fr']",13,"

ISO 20483:2006 specifies a method for the determination of the nitrogen content of cereals, pulses and derived products, according to the Kjeldahl method, and a method for calculating the crude protein content.

The method does not distinguish between protein nitrogen and non-protein nitrogen. If it is important to determine the non-protein nit ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).