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BS 7164-21:1996

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Chemical tests for raw and vulcanized rubber Determination of nitrogen content

Available format(s)

Hardcopy , PDF

Superseded date

31-10-2014

Language(s)

English

Published date

15-06-1996

Committees responsible
National foreword
Method
1 Scope
2 Normative references
3 Principle
4 Macro-method
5 Semi-micro method
6 Precision
7 Test report
Annex
A (informative) Guidance for using precision results
Tables
1 Type 1 precision - Blended-sample testing
2 Type 1 precision - Unblended-sample testing
Figures
1 Assembly of digestion apparatus for the semi-micro method
2 Exhaust tube for the semi-micro method
3 Digestion flasks for the semi-micro method
4 Assembly of distillation apparatus for the semi-micro
   method
5 Distillation flask for the semi-micro method
6 Trap for the semi-micro method
7 Condenser jacket for the semi-micro method
8 Drip funnel for the semi-micro method
9 Condensor tube for the semi-micro method

Gives a macro-and semi-micro method for determining nitrogen in raw natural arubber and natural rubber latex using variations of the Kjeldahl process.

Committee
PRI/22
DevelopmentNote
Supersedes 94/306087 DC and BS 7164-21(1990) (09/2005)
DocumentType
Standard
Pages
20
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

BS 6057-2:1987 Rubber latices Sampling
ISO/TR 9272:2005 Rubber and rubber products Determination of precision for test method standards

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