In Australia, the National Model Regulations for the Control of Workplace Hazardous Substances [NOHSC:1005(1994)] requires that "...manufacturers and importers shall: (a) produce MSDS for all hazardous substances which they supply;(b) review and revise MSDS to keep them up to date, and in any case at intervals not exceeding five years from the date of last issue of the MSDS; and (c) provide a current MSDS to the Australian National Material Safety Data Sheet Repository."