Which method is NOT approved by DFS for conducting breath alcohol analysis in the GBI Rule 92-3?

The method involving the analysis using an unapproved instrument is the choice that is not approved by the Department of Forensic Sciences (DFS). In breath alcohol analysis, using a certified and approved instrument is vital to ensure the accuracy and reliability of the results. The Intoxilyzer 9000 is specifically designed and validated for this purpose, and any unapproved instruments lack the necessary calibration, performance validation, and legal compliance required to produce valid results. This directly impacts the integrity of the testing process and can lead to unreliable outcomes.

On the other hand, conducting the test by a permitted individual, performing quarterly checks for instrument calibration, and using the Intoxilyzer 9000 after its approval date are all established practices outlined by DFS to maintain rigorous standards in breath alcohol testing. These practices ensure that the testing process is performed by qualified personnel and that the instruments used are regularly calibrated and maintained, thereby supporting the overall validity of the testing results.