Mary McMurray, Blue Mounds, WI. Chemistry degree. Previously worked for Wisconsin State Patrol on Intoxilyzer 5000 as instructor and maintenance tech. Extensive experience with BAC Datamaster, Intoximeter EC-IR and Draeger 7410 & 7110. Expert on preliminary breath testing-devices. Expert on software applications for breath instruments. Also former SFST instructor in 1980s and early 1990s. Maryís e-mail:
Dr. Michael Hlastala, Ph.D. Breath testing-device expert, Professor of Lung Physiology and Biophysics and of Medicine, Seattle, Washington, Phone: 206-543-3166; Fax: (206) 685-8673; Practicing since 1969, with over 350 published articles or books.
Joe CitronMD, JD (board-certified ophthalmologist for 30+ years), Atlanta, GA. HGN guru (from both medical standpoint and SFST training) and other SFSTs (certified); Intox 5000 (factory certified instructor); medical testimony such as symptoms that mimic alcohol impairment after traffic accident; medical degree, Albert Einstein College of Medicine, NY; residency at Mayo Clinic, Rochester, MN - 404-261-2911 or 404-386-1100 or 404-784-5297. e-mail:
Ronald HensonPh.D. Peoria, IL (309) 360-5614; P.O. Box 10706, Peoria, IL 61612-0706. Ph.D. (Dissertation: Workplace Drug & Alcohol Testing), M.P.A., B.S. Ex-police officer and previously worked for State of Illinois as an Instructor for Breath, Blood, and Urine Alcohol Testing and SFSTs. Expert experience with the Intoximeter EC/IR, Intoximeter 3000, AlcoSensor Models III & RBT IV, Intoxilyzer 5000 & 4011s, BAC Verifier, BAC DataMaster, portable breath-test devices, and related physiology and pharmacology principles associated with alcohol testing.
Jan Semenoff, a factory-certified instructor for the Intoxilyzer 5000, and a former Canadian police officer. E-mail:; Web site:; offers breath training course for Intoxilyzer 5000.