Reference number
ISO 5520:1981
International Standard
ISO 5520:1981
Fruits, vegetables and derived products — Determination of alkalinity of total ash and of water-soluble ash
Edition 1
1981-08
Read sample
ISO 5520:1981
11574
Published (Edition 1, 1981)
This publication was last reviewed and confirmed in 2024. Therefore this version remains current.

ISO 5520:1981

ISO 5520:1981
11574
Language
Format
CHF 42
Convert Swiss francs (CHF) to your currency

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

  •  : Published
     : 1981-08
    : International Standard confirmed [90.93]
  •  : 1
     : 3
  • ISO/TC 34/SC 3
    67.080.01 
  • RSS updates

Life cycle

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