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ISO 2223:1972

Formaldehyde solutions for industrial use — Limit test for heavy metals (excluding iron)

Nov 1, 1972
95.99   Withdrawal of Standard   May 27, 2002

General information

95.99     May 27, 2002

ISO

ISO/TC 47

International Standard

71.080.80  

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Scope

The method detects only the heavy metals present in non-complex form, the sulphides of which are precipitated in acid solution. The method is not specific for any one heavy metal. The principle consists in conversion of heavy metal, such as lead and copper, in acid solution to their sulphides, and comparison of the colour produced with that given by an aliquot volume of standard lead solution treated with hydrogen sulphide in the same way.

Life cycle

NOW

WITHDRAWN
ISO 2223:1972
95.99 Withdrawal of Standard
May 27, 2002

National adoptions

SRPS H.B8.277:1983  
ISS

Formaldehyde solutions for industrial use — Limit test for heavy metals (excluding iron)

95.99   Withdrawal of Standard

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