ISO 9768:1994 PDF
Tea — Determination of water extract
Tea — Determination of water extract
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 3
- Дата публикации:
- 28 июля 1994 г.
- Издание:
- ISO IS 9768 edition 2 version 1
- ICS:
- 67.140.10
The principle of the method specified is extraction of soluble matter from a test portion by boiling water under reflux, filtration, washing, drying and weighing of the hot-water-insoluble residue, calculation of the water extract.
Abstract
Overview
ISO 9768:1994 is an internationally recognized standard established by the International Organization for Standardization (ISO) that specifies a reliable and standardized method for the determination of water extract in tea. This method involves the extraction of soluble matter from a tea sample by boiling water under reflux conditions, followed by filtration, drying, and weighing of the insoluble residue. The water extract content is calculated as a percentage of dry matter, providing essential quality parameters for tea products worldwide.
Похожие стандарты
Стандарты, упомянутые в описании