ISO 9768:1994

Current Revision
Tea -- Determination of water extract

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ISO 9768:1994

Tea -- Determination of water extract

PUBLISH DATE 1994
ISO 9768:1994

The principle of the method specified is extraction of soluble matter from a test portion by boiling water under reflux.

It involves filtration, washing, drying and weighing of the hot-water-insoluble residue, calculation of the water extract.

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