Dr. Dennis Simpson is a distinguished university professor at Western Michigan University. He specializes in neuropsychopharmacology and has been conducting research on breath alcohol testing for over 20 years.
He joins the podcast to discuss his research on breath alcohol testing and the DataMaster DMT instrument.
He explains that the duration has a huge impact on the results of alcohol tests, with longer blows resulting in higher readings. His research found that 24-second blows were 0.02-0.04 g/210L higher than 6-second blows.
Dr. Simpson also highlights the issue of mouth alcohol, which can contaminate breath samples and lead to inaccurate readings.
He shares the findings of his research, which showed that the DataMaster DMT produced invalid samples only 52% of the time when mouth alcohol was present.
Dr. Simpson suggests that blood alcohol testing may be a more reliable alternative to breath testing and discusses his future research plans in this area.
Longer breath exhalations can result in higher alcohol testing readings.
Mouth alcohol can contaminate breath samples and lead to inaccurate readings.
The DataMaster DMT instrument may not always flag mouth alcohol as an invalid sample.
Blood alcohol testing may be a more reliable alternative to breath testing.
"A short blow of six seconds would produce a lower result than a long blow of 24 seconds."
"Only 52% of the time, the DataMaster DMT produced invalid samples in the presence of mouth alcohol."
Will the DMT produce an invalid sample in the presence of mouth alcohol?
6-seconds vs. 24-second blows on the DMT
(Transcript is automated and not checked for errors.)