ISO 3195-1975 工业用氢氧化钠 取样 试样 供某些测定用的主要溶液的配制

标准号：ISO 3195-1975
中文标准名称：工业用氢氧化钠 取样 试样 供某些测定用的主要溶液的配制
英文标准名称：Sodium hydroxide for industrial use; Sampling; Test Sample; Preparation of the main solution for carrying out certain determinations
标准类型：G04
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G04
国际标准分类号：71.060.40
适用范围：Indicates the conditions under which the test sample shall be prepared and relates to particular properties which require particular precausions: the samples shall be taken rapidly in a dry atmosphere, storage in an airtight bottle. The bottle shall be made from an inert material such as polyethylene. Preparation of the main solution with distilled carbonat- free water. If the silica content is to be determined the test portion shall be dissolved in a container made from silica-free material such as polyethylene or silver. Cancels and replaces ISO Recommendations R 977/1969 and R 978/1969.