9. Subject to regulation 12 below, the inspector shall test every capacity measure—
(a)by trial for use in the manner in which it is to be used as a measure, either for holding or for delivering its contents;
(b)by using—
(i)where practicable, water or an intended liquid of use, or
(ii)in the case of a dry capacity measure where the use of a liquid is impracticable, seeds, glass beads or polystyrene beads of an appropriate and regular size, proper precautions being taken to achieve reliable and consistent results; and
(c)subject in the case of dispensing measures for pharmaceutical purposes to regulation 11 below, either—
(i)volumetrically, by comparison with one or more local or working standards or by means of appropriate testing equipment which complies with the requirements of the Weights and Measures (Local and Working Standard Capacity Measures and Testing Equipment) Regulations 1990(1); or
(ii)gravimetrically, by determining the weight of water of known density using a suitable weighing machine.
S.I. 1990/2626 as amended by regulation 19 of these Regulations.