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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)

General information
Valid from 16.11.2020
Base Documents
ISO 9455-9:2020; EN ISO 9455-9:2020
Directives or regulations
None
Standard history
Status
Date
Type
Name
16.11.2020
Main
01.01.2000
Main
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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