Breath Testing Machines in Ohio

While a blood test is widely considered the most accurate test to determine blood alcohol content (BAC) in an Ohio DUI case, the breath test is much more commonly used. Why? The DUI breath test is much easier to administer, less expensive and produces quicker results. That being said, breath testing evidence is typically the most damaging piece of evidence in most DUI/OVI cases. As such, it is important for any good DUI/OVI attorney in Ohio to have a good understanding of the machines, a feel for the scientific theory behind the machines, as well as a comprehensive understanding of the associated regulations.

If you have an Ohio DUI case, you should consider talking to a top Ohio DUI lawyer to see if he can get the case dismissed or reduced to a lesser offense. The penalties on these pages only apply to drivers who are convicted of DUI/OVI. An experienced Ohio DUI lawyer may be able to prevent that from happening.

How Ohio’s Breath Testing Machines Work


When a suspected DUI/OVI driver submits a breath sample into a breath-testing machine, infrared energy is transmitted through the chamber containing the breath sample. Alcohol molecules absorb infrared energy, and the machine is able to measures the amount of infrared energy absorbed. Based upon the quantity absorbed, the machine performs a calculation to ascertain the concentration of alcohol in the breath sample. The machine then prints out the result on a piece of paper, with the blood alcohol content expressed in grams of alcohol per 210 ml of breath. If you were charged with DUI/OVI in Ohio, consider talking to an experienced DUI/OVI lawyer to learn how to challenge these results.

Breath Testing Machines Used by the Police in Ohio DUI/OVI Cases


DUI/OVI breath-testing machines must by approved by the Ohio Department of Health before they can be utilized by Ohio Law Enforcement Agencies. Currently, there are three approved machines:

Common Mistakes in Ohio DUI/OVI Investigations


No Ohio DUI/OVI/drinking and driving arrest is perfect and the best Ohio DUI/OVI lawyers knows this. Most Ohio DUI/OVI investigations include a number of witnesses, including police officers and the personnel who collect, store and test chemical samples.  These witnesses are human and they make mistakes. Further, most Ohio DUI/OVI investigations include a breath testing device or other testing equipment that is not always maintained according to current Ohio DUI/OVI regulations.

Do You Want Award-Winning Ohio DUI/OVI Representation?

There are over 1 million laws in the United States. I am a top Ohio DUI/OVI defense lawyer who devotes his entire practice to ONE. Because of my experience and concentrated focus, I know the Ohio DUI/OVI laws better than most attorneys in the state. I am passionate about Ohio DUI/OVI defense and I get results, however, I only accept a limited number of clients. If you’re serious about your case and want a top Ohio DUI/OVI lawyer on your team, call me, the Ohio DUI Dude at 1-844-DUI-DUDE.