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ISO 3195:1975

Sodium hydroxide for industrial use -- Sampling -- Test Sample -- Preparation of the main solution for carrying out certain determinations

Üldinfo
Kehtiv alates 01.03.1975
Tegevusala (ICS grupid)
71.060.40 Alused
Direktiivid või määrused
puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
01.03.1975
Põhitekst
Põhitekst
Põhitekst
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.
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