TS–001 Certificates of Accuracy not in label form

This policy applies to Certificates of Accuracy that are not in label form, issued to weighing and measuring instruments used for trade.

Reference documents


It is not acceptable to include a customer details on a Certificate of Accuracy (COA) that is not in label form.

A COA, not in label form, should follow the prescribed format in Schedule 5 of the regulations. No additional information is permitted to be included.

An Accredited Person (AP) issuing a notice that purports to be a COA would be in breach of their accreditation for issuing a COA that is not in the prescribed form.

An AP may produce a notice that is outside the controls of the weights and measures legislation, but this must not contain any references to:

  • The weights and measures legislation,
  • The identifier of the accredited organisation, or
  • The personal identifier of an accredited individual.

The following example of a notice would be considered suitable:

Instrument Status Notification

  • Instrument details…
  • Owner of instrument…
  • The instrument identified above was issued with a Certificate of Accuracy on the XX/XX/XXXX which will expire on the XX/XX/XXXX
  • This Certificate of Accuracy was issued by…

Tip Icon Blue2 NOTE

A notice in the above form would be issued outside the requirements of the accreditation scheme and is not required to be approved by Trading Standards. Where a notice conflicts with this policy, or the weights and measures legislation, an Accredited Person may be in breach of their accreditation.

Trade Measurement — Technical Policy

Policy number: TS - 001
Effective date: August 2016
Version date: December 2019
Version number: 3
Policy name: Certificates of Accuracy not in label form
Reviewed by: Davis White, Legal Metrology Advisor and Senior Trading Standards Officer
Approved by: Phil Sorrell, Team Leader Compliance and Inspection