%0 Journal Article
%T Blood/breath correlations: Intoxilyzer® 5000C, Alcotest® 7110, and Breathalyzer® 900A breath alcohol analyzers
%J Journal (Canadian Society of Forensic Science)
%D 1995
%A Taylor, M. D.
%A Hodgson, B. T.
%V 28
%N 2
%P 153-164
%X Two infrared (IR) breath alcohol analyzers, the Alcotest® 7110 and the Intoxilyzer® 5000C, were evaluated against blood results and against the Breathalyzer® 900A currently used by Canadian police agencies. A total of 18 healthy human subjects were used for the breath to breath comparisons while 15 of those subjects each provided two blood samples approximately one hour apart for blood I breath correlations. The IR analyzers and the Breathalyzer® showed a high degree of correlation with blood samples (n = 15: r = 0.974 for the Breathalyzer®, r = 0.971 for the Intoxilyzer®, and r = 0.989 for the Alcotest®). All three Instruments underestimated the blood results (mean differences, blood minus breath: 12 mg% for the Breathalyzer®, 18 mg% for the Intoxilyzer®, and 9 mg% for the Alcotest®). In breath to breath comparisons the Intoxilyzer® underestimated the Breathalyzer® (n = 18, mean difference Breathalyzer® minus Intoxilyzer® = 4 mg%) while the Alcotest® overestimated the Breathalyzer® (n = 17, mean difference Breathalyzer® minus Alcotest® = −3 mg%).<p />
%G en
%I Informa - Taylor and Francis Group
%@ 0008-5030
%U http://dx.doi.org/10.1080/00085030.1995.10757479