International Organization for Standardization (ISO)
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ISO 735:1977
Scope
The method consists in treating of the total ash (see ISO 749) with hydrochloric acid, to remove the portion soluble in this reagent, then incinerating and weighing of the residue and replaces ISO Recommendation R 735-1968.
ISO 735:1977 history
1977ISO 735:1977 Oilseed residues; Determination of ash insoluble in hydrochloric acid