Document ID: chunk:federal_register_of_legislation:F2024C01009:reg:18
Version: federal_register_of_legislation:F2024C01009
Segment Type: reg
Provision Reference: reg 18
Character Range: 28083–30131

18  Certificates of verification of State primary standards of measurement
 (1) When a State primary standard of measurement is verified, a certificate of verification must be issued to the appropriate State authority.
 (2) The certificate of verification of a State primary standard of measurement must state:
 (a) that it verifies the State primary standard of measurement in an appropriate manner, having regard to the nature of the standard of measurement; and
 (b) the date of verification; and
 (c) the value ascertained for the standard on that date in terms of an Australian legal unit of measurement; and
 (d) the accuracy with which the standard is verified; and
 (e) the value (stating the uncertainty) of any relevant environmental or other influence factors, like temperature and pressure, at the time of the verification; and
 (f) a description of any mark on, or attached to, the standard under these regulations; and
 (g) the period, from the date of verification, for which the certificate is given.
 (4) For paragraph (2)(d), the accuracy of a State primary standard of measurement must be ascertained in a manner determined in writing by the Chief Metrologist.
 (5) For paragraph (2)(d), the accuracy with which a State primary standard of measurement must be verified must be expressed as an uncertainty that does not exceed:
 (a) for a standard for the measurement of length of a denomination stated in column 1 in Schedule 4—the maximum permissible uncertainty stated for the denomination in column 2 in that Schedule; or
 (b) for a standard for the measurement of mass of a denomination stated in column 1 in Schedule 5—the maximum permissible uncertainty stated for the denomination in column 2 in that Schedule; or
 (c) for a standard for the measurement of mass of a denomination not stated in column 1 in Schedule 5—the maximum permissible uncertainty appropriate to that denomination when linear interpolation is applied to the maximum permissible uncertainty stated for the denominations in column 2 in that Schedule.