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Homepage>ISO 3139:1976-Aqueous hydrofluoric acid for industrial use — Sampling and methods of test
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sklademVydáno: 1976
ISO 3139:1976-Aqueous hydrofluoric acid for industrial use — Sampling and methods of test

ISO 3139:1976

ISO 3139:1976-Aqueous hydrofluoric acid for industrial use — Sampling and methods of test

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Označení normy:ISO 3139:1976
Počet stran:4
Vydání:1
Vydáno:1976
DESCRIPTION

ISO 3139:1976


Contains also titrimetric methods for determination of the total acidity, the hexafluorosilicic acid content and the non-volatile acids content and a method for calculating the hydrogen fluoric content. Specifies the scope and the field of application of these methods and declares the principle of the procedures. This second edition results from the incorporation of Addendum in the first one. Cancels and replaces the first edition ISO 3139/1974.
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