This document discusses sector approaches to generating safe use of mixtures information (SUMI) under REACH. It provides the following key points: 1) SUMI is an appendix to SDSs that helps formulators communicate safe use conditions from substance exposure scenarios to end users in a standardized, easy to understand format. 2) Developing SUMIs at the sector level ensures consistent translation of substance information into meaningful guidance for mixture end users. 3) The goal of SUMI is to bridge REACH and occupational health and safety requirements by providing clear, sector-wide safe use instructions for mixtures that can be implemented by workplaces.