ISO 5520:1981

Fruits, vegetables and derived products — Determination of alkalinity of total ash and of water-soluble ash

NORMA vydaná dňa 1.8.1981

Anglicky -
Elektronické PDF (55.60 EUR)
Anglicky -
Tlačené (55.60 EUR)

Francúzsky -
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Francúzsky -
Tlačené (55.60 EUR)

The information about the standard:

Designation standards: ISO 5520:1981
Publication date standards: 1.8.1981
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: International technical standard
Kategória: Technické normy ISO

Annotation of standard text ISO 5520:1981 :

Description / Abstract: 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.