ISO 19984-2:2017
Rubber and rubber products — Determination of biobased content — Part 2: Biobased carbon content
ISO 19984-2:2017 specifies measuring methods for the determination of biobased carbon contents in rubber and rubber products, including polyurethanes. The methods focus on carbon atoms in rubber or rubber products, and determine whether the carbon-containing component is biobased or not judging from the concentration of 14C, radiocarbon isotope.
ISO 19984-2:2017 applies to rubber and rubber products such as raw materials, materials and final products.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Sampling
6 Measuring method of biobased carbon content by determination of 14C content for rubber products and raw materials
6.1 General
6.2 Sample preparation and two methods to determine 14C concentration
6.3 Calculation of the biobased carbon content
6.3.1 General
6.3.2 Correction factor
6.3.3 Calculation of , the biobased carbon content by Method A (AMS)
6.3.4 Calculation of , the biobased carbon content by Method B (LSC)
6.3.5 Examples
7 Precision
8 Test report
Annex A (normative) Method A — Determination by accelerator mass spectrometry (AMS)
Annex B (normative) Method B — Determination by liquid scintillation counter (LSC)
Annex C (informative) Examples of the determination of biobased carbon content for rubber and rubber products
Annex D (informative) Determination of the biobased carbon content of a tyre
Annex E (informative) Precision results from an interlaboratory test programme
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Sampling
6 Measuring method of biobased carbon content by determination of 14C content for rubber products and raw materials
6.1 General
6.2 Sample preparation and two methods to determine 14C concentration
6.3 Calculation of the biobased carbon content
6.3.1 General
6.3.2 Correction factor
6.3.3 Calculation of , the biobased carbon content by Method A (AMS)
6.3.4 Calculation of , the biobased carbon content by Method B (LSC)
6.3.5 Examples
7 Precision
8 Test report
Annex A (normative) Method A — Determination by accelerator mass spectrometry (AMS)
Annex B (normative) Method B — Determination by liquid scintillation counter (LSC)
Annex C (informative) Examples of the determination of biobased carbon content for rubber and rubber products
Annex D (informative) Determination of the biobased carbon content of a tyre
Annex E (informative) Precision results from an interlaboratory test programme
Bibliography