PAS Systems International, Inc. (PAS), located in Fredericksburg, Virginia, U.S.A., is engaged in designing, manufacturing, and marketing innovative instruments focused on detection and measurement of alcohol presence in breath samples or ambient air. These instruments have broad applications in law enforcement, correctional institutions, schools, military, and the transportation industry.

PAS is the recognized leader for its expertise in the field of passive alcohol sensor technology. Our passive alcohol sensor designs are based on twenty-five years of research by independent and government traffic safety organizations.The company's P.A.S. Systems Technology provides proprietary platinum electrochemical fuel cell sensor instruments for enforcing alcohol impairment legislation across the nation and in most countries of the world.

Our expertise lies not only in the instruments themselves but also the technology that drives them. PAS possesses vast experience in fuel cell wafer manufacturing along with extensive knowledge of fuel cell chemistry, cell case designs, heaters and sampling systems; all essential elements for any high quality Breath Alcohol Ignition Interlock Device (BAIID) or Analytical Breath Alcohol Testing Instrument.