(a) The device shall be inspected, maintained, and checked for calibration accuracy and operational performance at least once every sixty (60) days and more frequently, if necessary, as specified by the department. This maintenance and calibration check will be performed by a certified IID service center as described in §19.27 of this title (relating to Certification and Inspection of Service Centers). (b) The maintenance and calibration check will consist of, but not be limited to, a check of the device to determine that the device is properly functioning in accordance with the following sections:   (1) accuracy--§19.23(a) of this title (relating to Technical Requirements);     (A) The device shall be calibrated before placing into service. The calibration described herein shall verify the IID accuracy to be within plus or minus 0.010 g/210 liters of the reference sample predicted value.     (B) Upon return to the service center as in subsection (a) of this section, the device shall be subjected to a calibration confirmation test. This test shall consist of introducing to the device a known alcohol concentration from a reference sample device, the analysis of which indicates the device's agreement with the known concentration. The vendor's software shall be capable of performing, documenting and reporting the result of this calibration confirmation test. The test result described herein shall verify the accuracy of the IID to be within plus or minus 0.010 g/210 liters of the reference sample predicted value.       (i) Should the device fail the calibration confirmation test referred to in subsection (b)(1)(B) of this section that information shall be made available to the appropriate judicial authority.       (ii) Should the calibration confirmation test referred to in subsection (b)(1)(B) of this section not agree within plus or minus 0.010 g/210 liters of the reference sample predicted value, the device shall be recalibrated so as to restore the accuracy described in subsection (b)(1)(A) of this section before the device may be returned to service.   (2) anticircumvention--§19.24(a) of this title (relating to Miscellaneous Requirements); and   (3) operational features--§19.24(b) of this title (relating to Miscellaneous Requirements). (c) Maintenance and calibration records shall be maintained by the manufacturer, the manufacturer's representative, and/or the vendor and shall be provided upon request to the department and/or any appropriate judicial authority. (d) If at any time the device fails to meet the provisions of this section, the device shall be removed from service or calibrated and/or repaired, and these records shall be made available upon request to the department and/or any appropriate judicial authority.

Source Note: The provisions of this §19.25 adopted to be effective June 29, 2000, 25 TexReg 6157; amended to be effective July 10, 2002, 27 TexReg 6049; amended to be effective March 26, 2006, 31 TexReg 2194