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.
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General information
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Status: PublishedPublication date: 1981-08Stage: Close of review [90.60]
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Edition: 1Number of pages: 3
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Technical Committee :ISO/TC 34/SC 3ICS :67.080.01
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