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Standard
ISO 7270-2
Third edition
Rubber — Analysis by pyrolytic gas-
2024-05
chromatographic methods —
Part 2:
Determination of styrene/
butadiene/isoprene ratio
Caoutchouc — Méthodes d'analyse par pyrolyse et
chromatographie en phase gazeuse —
Partie 2: Détermination du rapport styrène/butadiène/isoprène
Reference number
ISO 7270-2:2024(en) © ISO 2024
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ISO 7270-2:2024(en)
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© ISO 2024 – All rights reserved
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ISO 7270-2:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 2
6 Apparatus . 2
6.1 Extraction apparatus .2
6.2 Pyrolysis/gas chromatography system .2
6.2.1 General .2
6.2.2 Pyrolysis device .2
6.2.3 Gas chromatograph .3
6.2.4 Chromatographic columns .3
6.2.5 Data-handling equipment .3
7 Procedure . 3
7.1 Preparation of test samples from calibration samples and unknown sample .3
7.2 Test conditions .3
7.3 Preparation of calibration curves .
...