ISO 2516:1973
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Ammonium hydrogen carbonate for industrial use (including foodstuffs) Determination of total alkalinity Volumetric method
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
05-22-2019
English, French
04-01-1973
The principle of the analysis consists in acidification of a test solution by addition of an excess of standard volumetric sulphuric acid solution and back-titration with standard volumetric sodium hydroxide solution in the presence of methyl red- methylene blue mixed indicator.
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