Article – Industrial Safety News On 30 April 2021, New Zealand adopted a new classification system for hazardous substances under the Hazardous Substances and New Organisms Act 1996 (HSNO). This new system is the Globally Harmonised System (GHS). The GHS is an international hazard … On 30 April 2021, New Zealand adopted a new classification system for hazardous substances under the Hazardous Substances and New Organisms Act 1996 (HSNO). This new system is the Globally Harmonised System (GHS). The GHS is an international hazard classification system for chemicals created by the United Nations. The hazards are communicated on labels and safety data sheets including how to safely store, use and dispose of chemicals.