ISO 1576:1988 PDF
Tea — Determination of water-soluble ash and water-insoluble ash
Tea — Determination of water-soluble ash and water-insoluble ash
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 7 июля 1988 г.
- Издание:
- ISO IS 1576 edition 2 version 1
- ICS:
- 67.140.10
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.
Abstract
Overview
ISO 1576:1988 is an international standard that specifies a standardized method for determining the water-soluble and water-insoluble ash content in tea. Developed by ISO/TC 34 (Agricultural food products), this procedure involves extracting the total ash from tea samples using hot water, followed by filtration, ignition, and weighing of residues to accurately quantify insoluble ash. The soluble ash content is calculated by difference. This method ensures consistent and reliable chemical analysis of tea, supporting quality control and compliance in the tea industry.
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