Hazardous — IECEx
The international certification scheme for explosive atmospheres — one test report and certificate, recognised across member countries including New Zealand and Australia.

In brief
IECEx is the IEC's international certification scheme for equipment used in explosive atmospheres. Unlike ATEX, which is EU legislation, IECEx is a voluntary global scheme: equipment is tested once against IEC 60079 standards and certified with international acceptance — the basis New Zealand and Australia use for hazardous-area equipment.
In detail
For a plant that exports or buys internationally, IECEx solves the certification babel: an IECEx Certificate of Conformity carries the test evidence with it, so equipment accepted in Auckland is accepted in Dubai. Australia and New Zealand adopted IECEx directly through the AS/NZS 60079 series — for TLG's home markets it is the native regime.
In practice ATEX and IECEx overlap heavily — the same IEC standards underpin both — and most quality equipment carries both markings. TLG selects and documents equipment so certification matches the destination market, not just the country of manufacture.
Common questions
Send the material, throughput and plant constraints. You’ll get a considered answer from an engineer, not a brochure.