Transport i lotnictwo · 29/12/1994

Highway Safety Programs; Model Specifications for Calibrating Units for Breath Alcohol Testers

This notice amends the Model Specifications for Calibrating Units for Breath Alcohol Testers in order to align test levels with those in Model Specifications for Devices to Measure Breath Alcohol. Under the earlier calibrating unit specifications, devices were evaluated at 0.050, 0.100, and 0.150 BAC. To achieve alignment with the amended breath tester specifications, this notice amends the calibrating unit specifications to perform evaluations at 0.020, 0.040, 0.080, and 0.160 BAC. It also sets the acceptable Systematic Error at not greater than 0.002 BAC at all BAC levels tested, rather than the previous 2%. Finally, it makes a number of changes to automate and make more efficient the procedures used for the prescribed gas chromatography (GC) testing, as compared with the manual GC procedures previously used and described in the 1984 Model Specifications. Published with this notice is an amended Conforming Products List (CPL) of calibrating units that meet the amended Model Specifications for Calibrating Units. This notice also proposes and seeks comments concerning a new, alternate testing procedure for the evaluation of dry gaseous ethanol calibration devices, and other changes