ISO 5520:1981

This standard was last reviewed and confirmed in 2018. Therefore this version remains current.

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.

General information

Status
: Published

Publication date
: 1981-08
Edition
: 1

Number of pages
: 3
Technical Committee
: ISO/TC 34/SC 3 Fruits and vegetables and their derived products
ICS
:
67.080.01 Fruits, vegetables and derived products in general