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1.1 This test method provides a thermogravimetric (TGA) technique to determine the amounts of organic residue, overall carbon content, and ash content in recovered carbon black (rCB).

1.2 This test method uses previously calibrated, manual, or computer-assisted TGA instrumentation.

1.3 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

5.1 This test method is intended for use in quality control of production, for research and development purposes in which a compositional analysis or comparisons of different materials are needed.

5.2 This test method may not be suitable for rCB products containing either organic substances that decompose or oxidize only at temperatures of above 550°C or inorganic substances with decomposition temperatures ≤550°C.