Pennsylvania DUI Law - Gas Chromatography Blood Alcohol Testing

Gas Chromatography is widely used to test blood alcohol content in DUI cases. Knowledge of how these tests are conducted, and how gas chromatography actually works, is critical for defending clients in these types of DUI cases. If a sample of your blood was taken when you were arrested for a DUI, then it will be tested by gas chromatography.

The Commonwealth will rely upon these blood test results to convict you of a DUI, but these tests are not perfect. Many, many errors are made in the gas chromatography process. As a Pennsylvania DUI defense attorney, it's my job to expose these errors and show why these blood test results are not reliable "beyond a reasonable doubt".

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Working with the gas chromatograph at Axion Labs, Chicago, Illinois, June 2015

In June of 2015 I attended classes taught by the American Chemical Society and received training in Gas Chromatography at the prestigious Axion Labs in Chicago, Illinois. I had the honor of studying with Dr. Harold McNair and Dr. Lee Polite.

Dr. McNair, widely considered to be the "father of chromatography", is the first person to run a gas chromatograph in the United States, and the first person to earn a Ph.D. in chromatography. He founded the Varian equipment gas chromatography division and later Hewlett Packard. He ran the very first gas chromatograph in the United States while at Perdue. He studied under Nobel Laureate Dr. A.J.P. Martin (who was awarded the Nobel Prize for gas chromatography in 1952), Dr. Steve Dal Nogare and Prof. A.I.M. Keulemans. He developed one of the first chromatography short courses over 35 years ago and has been teaching ever since.

Dr. Polite has been teaching chromatography to professionals for more than 27 years and is the National Instructor for the American Chemical Society’s popular “Practical and Applied GC”, “Fundamentals of HPLC” and all hands-on HPLC and GC courses. Dr. Polite has taught courses for FDA, FBI Academy, EPA and every major pharmaceutical, chemical and petroleum company in the United States. He was conferred his Ph.D. in chromatography by Dr. Harold McNair.


Pennsylvania Criminal Defense Attorney Christopher Hemmel and Dr. Lee Polite at Axion Labs, Chicago, Ill

Dr. Lee Polite and Christopher Hemmel at Axion Labs, Chicago, Illinois, June 2015


Delaware County DUI Lawyer Christopher Hemmel Certification in Gas Chromatography

American Chemical Society Training in Gas Chromatography from Axion Labs, Chicago, Illinois

As of June, 2015, there were only 14 Pennsylvania lawyers educated in gas chromatography. Most of these lawyers are in the Harrisburg or Pittsburgh areas. I am the only lawyer in Delaware County, Montgomery County and Chester County who is trained in gas chromatography. I am uniquely qualified to defend you in DUI cases where gas chromatography blood alcohol test results are an issue.

If you have been charged with a DUI case, and you need a strong defense attorney to fight your case and challenge the blood alcohol test results, then give me a call today.


Call today to schedule a Legal Strategy Session on your DUI Case.


About Christopher Hemmel

Christopher Hemmel has been a licensed attorney since 1992. He earned a Bachelor of Science degree in Business Administration from Eastern University in Saint Davids, Pennsylvania and earned his law degree from Widener University School of Law in Wilmington, Delaware. He practices exclusively in the field of criminal law and DUI law in the Commonwealth of Pennsylvania.