BS 7164-21:1990
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Chemical tests for raw and vulcanized rubber Determination of nitrogen content
Hardcopy , PDF
English
30-09-1990
15-06-1996
Committees responsible
National foreword
Method
1. Scope
2. Normative references
3. Principle
4. Macro-method
5. Semi-micro method
6. Test report
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. Condenser tube for the semi-micro method
Describes a macro-method and a semi-micro method using variants of the Kjeldahl process.
| Committee |
PRI/22
|
| DevelopmentNote |
Supersedes BS 903-B11&12(1960) and BS 1673-2(1967) (09/2005)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| ISO 1656:2014 | Identical |
| ISO 1656:1988 | Identical |
A newer version of this standard is available.
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