Certificate of Accuracy

If you sell by weight or measure, a Certificate of Accuracy for your weighing and measuring equipment is useful, but not compulsory.

About the certificate

In addition to compulsory verification, you can choose to get a Certificate of Accuracy for your weighing and measuring equipment. This is valid for 12 months, and re-examination is required before a replacement certificate can be issued.

The Certificate of Accuracy is a self-adhesive label that can't be removed without being destroyed. It shows the Accredited Person's number and the expiry date of the certificate.

It is recommended that the label is displayed in a prominent position on the instrument, in full view of the buyer.


Benefits of renewing your Certificate of Accuracy every year include:

  • Increased confidence that your equipment is providing accurate and repeatable results.
  • It may provide a 'defence' in situations where the equipment is found to be inaccurate by a Trading Standards Officer.

Example Certificate of Accuracy

Example Certificate of Accuracy showing the name of the accredited person at the top, followed by text saying Examined and tested by an accredited person. Complies with the requirements of regulation 20 of the Weights and Measures Regulation 1999., then This certificate of accuracy expires on:, and at the bottom, Personal identifier of person issuing the certificate:.

How to get a certificate

An Accredited Person can issue a Certificate of Accuracy on request. A fee is usually charged for this service.

Find an Accredited Person

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