Published
The method consists in extractiing of the total ash with hot water, filtration through ashless filter paper, ignition and weighing of the residue to determine the insoluble ash; calculation of the soluble ash by difference.
WITHDRAWN
ISO 1576:1975
PUBLISHED
ISO 1576:1988
90.20
Standard under periodical review
Jul 15, 2025
Tea — Determination of water-soluble ash and water-insoluble ash
90.20 Standard under periodical review
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