Best Practices Guidelines for Material and Substance Characterization

This document provides implementation details for two sections of the HPD Open Standard:

• 2.2.1.7 Material Type: A broad classification of a material based on chemical makeup and molecular structure
• 2.2.2.7 Substance Role: A term that captures the substance’s purpose or function for inclusion in the material or product

In both cases, HPDC is providing a suggested list of terms that manufacturers are asked to choose from. The purpose of this is to support manufacturers in entering consistent, high-quality information on HPDs. This document provides that list of term, and additional instructions and information.