Most recent
BS 6049-5:1989
Methods of test for tea. Determination of water-soluble ash and water-insoluble ash (British Standard)
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.
Content Provider
British Standards Institution [bsi]