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EVS-EN ISO 9455-9:2020

Soft soldering fluxes - Test methods - Part 9: Determination of ammonia content (ISO 9455-9:2020)

Üldinfo
Kehtiv alates 16.11.2020
Alusdokumendid
ISO 9455-9:2020; EN ISO 9455-9:2020
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Standardi ajalugu

Staatus
Kuupäev
Tüüp
Nimetus
16.11.2020
Põhitekst
01.01.2000
Põhitekst
The principle of the method specified is to distil a prepared flux solution with sodium hydroxide to expel the ammonia present in the flux, to pass the resulting distillate into a standard sulfuric acid solution, to titrate the excess acid with sodium hydroxide solution and to calculate the ammonia content of the flux. Applies to fluxes of class 3.1.1 only, as defined in ISO 9454-1.
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