TY - JOUR PY - 1985// TI - An in vitro study of the accuracy and precision of Breathalyzer models 900, 900A, and 1000 JO - Journal of forensic sciences A1 - Caplan, Y. H. A1 - Yohman, D. T. A1 - Schaefer, J. A. SP - 1058 EP - 1063 VL - 30 IS - 4 N2 - Ninety Breathalyzer instruments (Model 1000) and twenty instruments (Models 900, 900A) were studied using a protocol described by the Department of Transportation's "Standard for Devices to Measure Breath Alcohol." Although the mean of each of three concentrations tested (0.05, 0.10, and 0.15 g/210 L) compared favorably in both series, the standard deviation was consistently higher for the Model 1000 instruments. The Model 1000 instruments also produced a significant number of test results which exceeded the normally expected scientific deviation.

Language: en

LA - en SN - 0022-1198 UR - http://dx.doi.org/ ID - ref1 ER -