Regulation 10 Testing to be carried out under working conditionsI1
England, Wales and Scotland
All measuring equipment shall be tested by an inspector under practical working conditions with a test liquid, that is to say,—
(a)
the liquid fuel that the equipment is intended to deliver; or
(b)
a liquid having properties which replicate in all respects relevant to testing those of the liquid fuel which the equipment is intended to deliver,
and in the following provisions of these Regulations “test liquid” shall be construed accordingly.