Quality Assurance Plan

All breath alcohol testing programs should follow criteria set forth in a Quality Assurance Plan, which may also be referred to as a Maintenance Protocol or Maintenance Plan.  The QAP may designate the types of standards that may to be used to perform calibrations and accuracy checks, and the minimum intervals for performing calibrations and accuracy checks. The QAP might also specify the acceptable tolerance to determine if the instrument is in proper calibration (often +/- 10% in screening applications). Recommended or required inspection and maintenance intervals may be part of the QAP as well.

It is important to understand that the QAP is designed for a specific testing program.  Intoximeters has developed a QAP approved by NHTSA (National Highway Traffic Safety Administration) for instruments used for US DOT Workplace testing purposes. These guidelines are required by the DOT Workplace testing rules in 49 CFR Part 40.233.  

For your program, the Operators manual offers some basic guidelines to help develop your protocols but you can consult a local authority or contact Intoximeters for more specific information.