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Dayton DUI Attorney Charles Rowland > Posts tagged "npas"

Ohio DUI Alert from Breathalyzer Manufacturer

The following is the response provided by N.P.A.S. regarding Ohio's decision to employ roadside breath testing instruments.  N.P.A.S. is the manufacturer of the BAC DataMaster breath testing machines. We have received many requests for information regarding the Ohio Department of Health's apparent decision to purchase products designed for mobile evidential breath testing in Ohio.We believe our instruments, made in Ohio by Ohio workers, suppliers, engineers and tradesman are the most reliable, and precise instruments in the industry, whether they are deployed at the roadside or in a station.Here is our take on mobile testing in Ohio.  Van applications (i.e. ...

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The BAC DataMaster: Margin of Error and Interfering Substances

HOW THE MACHINE WORKS[1]The BAC DataMaster is an evidential breath testing machine which works on the principles of infrared spectrophotometry.  Many vapors, including ethanol in the breath, absorb[2] infrared energy.  The machine captures a breath sample in its testing chamber and sends a beam of infrared energy through the sample.[3] When infrared energy passes through the ethanol molecule[4], the molecule begins to vibrate at its Hydro-Carbon bond and in the process uses up some, or all, of the energy.[5] Repeated scientific experimentation has allowed chemists to conclude that ethanol vibrates at – to varying degrees – are 3.4, 5 and...

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