Straight answers to common chemical-compliance questions.

GHS is the internationally aligned system used for classifying and communicating chemical hazards. In New Zealand it changed the way many hazards appear on labels and safety data sheets, but it did not remove workplace duties.

A workplace using, handling, manufacturing or storing hazardous substances must keep an inventory. It should cover substances and hazardous waste, including product or identifier, maximum quantity and location, and be kept current.

WorkSafe says a current SDS is mandatory for each hazardous substance regardless of quantity. It should match the product and be readily accessible. Obtain it when first supplied—including the first supply in five years—and after the SDS is amended.

Check container condition, compatibility, separation, containment, ventilation, ignition sources, security, signage and emergency equipment. The controls and certification triggers depend on each substance’s classification and the quantity held.

Enter the substances and maximum quantities in the WorkSafe Hazardous Substances Calculator. It helps identify key requirements such as signs, emergency measures and certification triggers, but specialist advice may still be needed.

No. GHS supports hazard classification and communication. New Zealand’s workplace, EPA and HSNO-related controls still determine what must be done with those substances.

No. ChemMatrix is an independent consultancy. It uses WorkSafe guidance to support practical readiness but does not represent WorkSafe, guarantee regulatory compliance or issue compliance certificates.

No. ChemMatrix can organise information, identify likely triggers and help prepare corrective actions. Where formal location, stationary-container or handler certification is required, it must be completed by the appropriately authorised person.