Citation

Glinn M, Adatsi F, Curtis P. J. Forensic Sci. 2011; 56(6): 1632-1638.

Affiliation

Toxicology Unit, Michigan State Police, 7320 North Canal Road, Lansing, MI 48913. Alcohol Enforcement Unit, Michigan State Police, 333 South Grand Avenue, Lansing, MI 48933.

Copyright

(Copyright © 2011, American Society for Testing and Materials, Publisher John Wiley and Sons)

DOI

10.1111/j.1556-4029.2011.01874.x

PMID

21827467

Abstract

The State of Michigan uses the Datamaster as an evidential breath testing device. The newest version, the DMT, will replace current instruments in the field as they are retired from service. The Michigan State Police conducted comparison studies to test the analytical properties of the new instrument and to evaluate its response to conditions commonly cited in court defenses. The effects of mouth alcohol, objects in the mouth, and radiofrequency interference on paired samples from drinking subjects were assessed on the DMT. The effects of sample duration and chemical interferents were assessed on both instruments, using drinking subjects and wet-bath simulators, respectively. Our testing shows that Datamaster and DMT results are essentially identical; the DMT gave accurate readings as compared with measurements made using simulators containing standard ethanol solutions and that the DMT did not give falsely elevated breath alcohol results from any of the influences tested.

Language: en