ClearChem Standard version BkA-CC-01.3 was published on January 5, 2018. This version implements several minor revisions. The ClearChem product categories were renamed to be consistent with the Origin Material Categories in the Origin online material data hub. This will facilitate the uploading of ClearChem information to the data hub. We also updated the reference to CDPH/EHLB/Standard Method to V1.2 (2017) and updated references to other standards throughout the document. A red-line version of the revised standard may be obtained from the program administrator by completing the Contact form.