ISO 3195:1975

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

Publication date: Mar 1, 1975

General information

Current stage: 90.93 Effective date: Feb 5, 2018

Originator: ISO

Owner: ISO/TC 47

Type: International Standard

ICS: 71.060.40

Languages: French English

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Status: Published

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Scope

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.

Life cycle

PREVIOUSLY

Revises
ISO/R 977:1969

Revises
ISO/R 978:1969

NOW

PUBLISHED
ISO 3195:1975
90.93 Standard confirmed
Feb 5, 2018

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