This guide specifies the format for representing and sharing information about nanomaterials, small molecules and biological specimens along with their assay characterization data using spreadsheet or TAB-delimited files. It is intended to facilitate the meaningful submission and exchange of nanomaterial descriptions and characterization data (metadata and summary data) along with the other files (raw/derived data files, image files, protocol documents, etc.) among individual researchers and to or from nanotechnology resources. It also provides researchers with guidelines for representing nanomaterials and characterizations to achieve cross-material comparison.This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.