For the purposes of section 31AD(2) of the Act, the prescribed procedure for carrying out a preliminary oral fluid test is that the police officer who conducts the test—
(a) provides a fresh oral fluid collection unit for use by a person required to provide a preliminary oral fluid sample; and
(b) uses only an oral fluid collection unit that, until required for taking the oral fluid sample, has been kept in a sealed container; and
(c) tests the oral fluid sample by using the device, or the oral fluid testing unit that is part of the device, that was used to obtain the sample.