ISO 5520:1981
$13.00
Fruits, vegetables and derived products — Determination of alkalinity of total ash and of water-soluble ash
| Published By | Publication Date | Number of Pages |
| ISO | 1981-08 | 8 |
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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