Section 80 Specificity and Interfering Substances and Infrared Machines

• Library: DWI Experts and the Science of Chemical Tests 2014

Various interfering substances can also cause false high breath testing results. These chemicals are found in the breath if they have been absorbed into the skin by exposure. The exposure can be from contact with organic solvents. Individuals who perform painting, auto repair, and certain industrial processes routinely have contact with these substances. The exposure needs to be recent. Below is a very short list of these compounds. A complete list could fill an entire text.

· Toluene—William Giguiere et al., Lacquer Fumes and the Intoxilyzer, 12 J...