New Zealand – Hazardous Substances (Compressed Gases) Regulations

Part 6 – Labelling and marking, Marking of cylinders and fire extinguishers.

Clause 39 Markings for cylinders and fire extinguishers

A refillable cylinder and a fire extinguisher (whether refillable or not) must be marked with the following information:
the register number of the cylinder design to which the cylinder or fire extinguisher was manufactured:
the manufacturer’s serial or batch number for the cylinder or fire extinguisher.
A refillable cylinder must be marked with the following information…
A fire extinguisher must be marked with a fire extinguisher registration number issued by a product certification body.

Clause 23B Fire extinguisher registration number

A low-pressure fire extinguisher must have a fire extinguisher registration number issued under sub-clause (2).
A product certification body may issue a fire extinguisher registration number for a low-pressure fire extinguisher if it is satisfied that the fire extinguisher—
has been manufactured in accordance with this Part; and
meets the quality assurance requirements specified in the fire extinguisher’s design.

Clause 3 Interpretations:

‘product certification body’ means a body accredited to ISO/IEC 17065 by an accreditation body operating to ISO/IEC 17011.