Причина отмены This guide provides a framework for collecting and handling samples for determination of biobased content of materials by means of the carbon isotope method described in Test Methods D6866. Tests for sampling adequacy based on the standard statistical tools are provided. In addition, reporting of the results, including sampling techniques and handling procedures and chain-of-custody issues are discussed.

Formerly under the jurisdiction of Committee D20 on Plastics, this guide was withdrawn in October 2020. This standard is being withdrawn without replacement due to its limited use by industry.