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ISO 5498:1981

Agricultural food products -- Determination of crude fibre content -- General method

General information

Valid from 01.04.1981
Directives or regulations
None

Standard history

Status
Date
Type
Name
01.04.1981
Main
The method consists in boiling with sulphuric acid solution (after any necessary grinding and defatting), and separation and washing of the insoluble residue. Boiling this residue with sodium hydroxide solution, then separation, washing, drying and weighing of the insoluble residue, and determination of the loss in mass on incineration. An annex A specifies methods of extraction of fatty substances. An annex B gives various devices for the separation of crude fibre and supplementary information on the procedures for their use.

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