The OSPAR Guidelines for Completing the HOCNF define substance: an element and its chemical compounds in natural form or as a result of a process, including added material needed to make the compound stable, and including contaminants from the production process, but excluding solvents which can be separated without interference with the substance’s stability or without altering the substance’s properties. Substances were previously also called components.
Source: Guidelines Regarding the Activities Regulations, Norway, updated December 2012. Regulatory Guidance
Substance includes a thing that is an organic material, whether living or not.
Source: Health and Safety in Employment Act 1992, Public Act 1992 No 96, New Zealand, as of 1 July 2011. Legislation