Sch 1B Pt 8 para 6
All regulated measuring instruments in the sample shall be individually examined and appropriate tests set out in the relevant designated standards and/or normative documents, and/or equivalent tests set out in other relevant technical specifications, shall be carried out in order to verify their conformity with the applicable requirements of these Regulations and to determine whether the lot is accepted or rejected. In the absence of such designated standard, or normative document, the approved body concerned shall decide on the appropriate tests to be carried out.