ISO 5520:1981
Fruits, vegetables and derived products — Determination of alkalinity of total ash and of water-soluble ash
OVERVIEW
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.
COMMENTS
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PRODUCT DETAILS
Status | Current |
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Edition | 1981 |
No. of Pages | 3 |
ICS Classification | 67.080.01 Fruits, vegetables and derived products in general |
Committee | ISO/TC 34/SC 3 |
Available for Purchase | For sale in Singapore only |
Adoption | ISO |