ISO-9768 › Tea -- Determination of water extract
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The principle of the method specified is extraction of soluble matter from a test portion by boiling water under reflux, filtration, washing, drying and weighing of the hot-water-insoluble residue, calculation of the water extract.
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67.140.10 (Tea Including herb teas)
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Document Number
ISO 9768:1994
Revision Level
2ND EDITION
Status
Current
Publication Date
Jan. 1, 1994
Committee Number
ISO TC 34/SC 8