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ISO 1576:1988
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Tea -- Determination of water-soluble ash and water-insoluble ash

This standard was last reviewed* in 2010.

*ISO standards are reviewed every five years.

Abstract

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.

 

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