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Status : Active
Standard Type : Main
Document No : ISO 4313 : 1976
Document Year : 1976
Pages : 3
Edition : 1
Section Volume : Surface active agents (ISO/TC 91.)
The determination is carried out in the following way: Hydrolysis of polyphosphates by nitric acid. Precipitation of phosphates in the form of quinoline phosphomolybdate in acetone solution. Drying and weighing of the precipitate.