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ISO 4278:1977

Sodium fluoride for industrial use — Determination of carbonate content — Gravimetric method

Nov 1, 1977
95.99   Withdrawal of Standard   May 27, 2002

General information

95.99     May 27, 2002

ISO

ISO/TC 47

International Standard

71.060.50  

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Scope

Applicable to products having contents, expressed as Na2 CO3 , more than 0.02 % (m/m). Describes the release of the carbon dioxide from a test portion by acidification and heating. Entrainment of the carbon dioxide in a flow of air and absorption in weighed absorption tubes containing soda asbestos. Specifies the weighing of the absorption tubes to determine the quantity released.

Life cycle

NOW

WITHDRAWN
ISO 4278:1977
95.99 Withdrawal of Standard
May 27, 2002

CORRIGENDA / AMENDMENTS

ABANDON
ISO 4278:1977/DAmd 2

National adoptions

Sodium fluoride for industrial use — Determination of carbonate content — Gravimetric method

95.99   Withdrawal of Standard

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