ISO-5498 › Agricultural food products -- Determination of crude fibre content -- General method
ISO-5498
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1ST EDITION
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CURRENT
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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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Document Number
ISO 5498:1981
Revision Level
1ST EDITION
Status
Current
Publication Date
April 15, 1981
Committee Number
ISO TC 34