What should be done if an "Ambient Fail / Purge Fail" occurs during testing?

In the event of an "Ambient Fail / Purge Fail" during testing with the Intoxilyzer 9000, the appropriate response is to ventilate the area and retest. An "Ambient Fail" indicates that there are interfering substances in the environment that could affect the accuracy of the test results. Proper ventilation helps to clear out any such substances, ensuring that the air quality is suitable for an accurate breath sample.

Allowing fresh air into the environment mitigates the risk of erroneous readings caused by contaminants. By retesting after ensuring the area is adequately ventilated, you can obtain reliable test results that reflect the subject’s true blood alcohol concentration, crucial for accurate assessments and legal purposes.

Other options, like ignoring the error or switching to another testing device, do not address the fundamental issue of potential environmental interference, which could lead to misleading conclusions about the subject's impairment. Requesting a blood test can be necessary but does not resolve the immediate concern of the testing device's failure to function correctly in that environment.