N.M. Code R. § 18.20.11.17
An installer shall
D. use only reference samples certified by an independent laboratory and approved by the Bureau to calibrate ignition interlock devices. If an installer uses wet bath reference samples to calibrate ignition interlock devices from a mobile service center, the installer shall:
(1) maintain the reference samples within the temperature limits specified by the manufacturer of the reference sample for accuracy of results; or
(2) pre-calibrate substitute devices at the fixed site service center and exchange them for the devices needing calibration at the mobile service center.
[18.20.11.17 NMAC - Rp, 18 NMAC 20.11.10, 1-1-03]