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Citation |
Pon RA, Dagenais C, Macalpine RA. J. Can. Soc. Forensic Sci. 2002; 35(3): 153-158. |
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Copyright |
(Copyright © 2002, Canadian Society of Forensic Science, Publisher Informa - Taylor and Francis Group) |
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DOI |
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PMID |
unavailable |
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Abstract |
An experiment was conducted during two Royal Canadian Mounted Police (R.C.M.P.) BAC Datamaster C™ training courses where police officers were given measured amounts of alcoholic beverages and subsequently provided breath samples into a number of instruments. A total of fifteen subjects were tested using different BAC Datamaster C™ instruments. After being instructed to blow into the instrument using a specific exhalation pattern, six of the fifteen subjects were able to produce an "INVALID SAMPLE" status message. Considering the test protocol utilized and allowing for alcohol's disappearance from the mouth, it was demonstrated that the manner, of sample delivery by the test subject was the most likely cause of an "INVALID SAMPLE" status message during a BAC Datamaster C™ breath test. |