标准摘要
[中文适用范围]： 本文件规定了蒸馏法测定助焊剂中氨含量的方法。该方法仅适用于按 ISO 9454-1 定义的 311 和 321 类助焊剂。 [外文原描述]： This document specifies a distillation method for the determination of the ammonia content of solid, paste or liquid fluxes. The method is applicable to fluxes of class 311 and 321 only, as defined in ISO 9454‑1.
英文名称Soft soldering fluxes — Test methods — Part 9: Determination of ammonia content