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ISO 5520:1981

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

Aug 1, 1981

General information

90.93     Aug 26, 2024

ISO

ISO/TC 34/SC 3

International Standard

67.080.01  

French   English  

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Published

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 5520:1981
90.93 Standard confirmed
Aug 26, 2024

REVISED BY

ABANDON
ISO/WD 5520

ABANDON
ISO/PWI 5520

National adoptions

SSH ISO 5520:2001  
DPS

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

60.60 Standard published

DPS/KT 275 more