GROWSAFE Registered Calibrator

Who should have this certificate?

This specialist certificate is for those who calibrate orchard, arable or vineyard spray equipment for hire or reward.

Benefits of the certificate

Holders of the GROWSAFE Registered Calibrator certificate are able to:
  • calibrate multiple types of spray equipment to spray multiple types of crops
  • understand the reasons for calibration
  • provide instructions to the spray applicator on sprayer setup
  • ensure their own safety when calibrating.
Many quality assurance programmes require that spray equipment be calibrated by a suitably competent person. A GROWSAFE Registered Calibrator certificate meets this requirement.

Certification requirements

To achieve GROWSAFE Registered Calibrator certification you need to:
  • complete a written assessment covering theory aspects of calibration (pre-course)
  • complete a small number of theoretical calibration calculations (pre-course)
  • attend a one day GROWSAFE approved calibration training course
  • provide evidence of competent calibration undertaken on the job including checking of spray equipment.
It is assumed that aspiring calibrators are working under the supervision of an experienced calibrator and being trained on the job. Please email us on to express your interest in becoming a GROWSAFE Registered Calibrator.

Expiry of certificate and renewal

A GROWSAFE Registered Calibrator Certificate is valid for 5 years, at which time it can be renewed. This is because laws, technology and best practice are constantly changing. While you can read and hear about these changes yourself, your customers and the regulators require evidence that you are up-to-date. Renewal of your certificate must be done within 6 months of expiry of your certificate. If you are due for renewal, please email us on and we will advise you of the next training event. Renewal requires attendance at a GROWSAFE approved calibration course and a post-course assessment.

2019 Calibrator courses

A number of calibrator courses will be delivered in 2019. These courses are suitable for both existing calibrators or new calibrators who meet pre-course requirements. It is also suitable for growers or contract sprayers wishing to undertake their own calibration and sprayer setup.  Courses are one day long and involve a post-course assessment. The cost of the course is $540 plus GST per person.  You can download more information and a course registration form .  Dates and locations are as follows:
  • Hawkes Bay (Hastings 2 July)
  • Bay of Plenty (Te Puke 3 July)
  • Top of the South (Motueka  4 July)
  • Otago (5 July)
Please email us on or ring 0508 GROWSAFE (0508 476 9723) to express your interest in attending a calibration course in another location.