ISO-5520 › Fruits, vegetables and derived products -- Determination of alkalinity of total ash and of water-soluble ash

ISO-5520 - 1ST EDITION - CURRENT


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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.

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67.080.01 (Fruits, vegetables and derived products in general)

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Document Number

ISO 5520:1981

Revision Level

1ST EDITION

Status

Current

Publication Date

Aug. 15, 1981

Committee Number

ISO TC 34/SC 3