ISO 5520:1981
Fruits, vegetables and derived products — Determination of alkalinity of total ash and of water-soluble ash
Название (английский):
ISO 5520:1981
Fruits, vegetables and derived products — Determination of alkalinity of total ash and of water-soluble ash
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 5
- Дата публикации:
- 1 августа 1981 г.
- Издание:
- ISO IS 5520 edition 1 version 1
- ICS:
- 67.080.01
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Язык документа:
Срок поставки:1 рабочий день
Цена:25 €
Описание (английский):
After incineration of the product at 525 +/- 25 degrees centigrade the method consists in a) in the case of total ash: addition of an excess of standard volumetric sulphuric acid solution and back titration with standard volumetric sodium hydroxide solution, b) in the case of water-soluble ash: extraction of the ash with hot water and neutralization of the aqueous extract with standard volumetric sulphuric acid solution.
Abstract
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