Data for 'Ethanol depletion dynamics in non-recirculating system breath alcohol simulators'

This is the breath-alcohol simulator ethanol concentration depletion data used in the technical note “Ethanol depletion dynamics in non-recirculating system breath alcohol simulators.” This data set includes ethanol depletion data from all trials, instrument stability test data, flow rate data, temperature data, statistical analysis results, figures used in the manuscript, and an equation that can predict ethanol concentration in the solution after repeated testing. Excerpt from the technical note abstract: “Breath alcohol simulators are devices that use a heated ethanol/water solution to simulate human breath. Vapor created from heating the solution is commonly used to calibrate alcohol breath testing instruments. When the vapor of the same solution is repeatedly sampled, it causes the ethanol concentration to deplete at a currently unknown rate. The goal of this study was to quantify and better understand the ethanol depletion in non-recirculating system breath alcohol simulators… It was found that when observing different flow rates, the depletion of ethanol concentration was directly correlated to the total liters of air that passed through the system (r > −0.95). Altering initial concentrations showed that as the solution concentration increased, the rate of depletion of ethanol also increased. Our findings indicate that the total ethanol depletion in a non-recirculating system breath alcohol simulator can be described as a percentage of the original concentration being lost when a specific volume of air is passed through the system. We then calculated an equation that can predict ethanol concentration in the solution after repeated testing.”