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BreathScanŽ is a disposable alcohol and drug testing indicator intended to provide a reliable indication of alcohol present in exhaled breath of test subjects. The alcohol and drug testing device is intended for use as a single, cost-effective breath alcohol screen and therefore need not meet the specifications expected of an evidential breath-testing device.
Twenty-five tubes from each of four batches were submitted for evaluation. Each batch was designed to test different breath-alcohol concentrations. The tubes were evaluated in groups of five on five individual occasions. The devices were evaluated at the value equivalent to the ethanol blood concentration stated on their label. (A concentration of 0.04% indicates an equivalent of 0.04 g. alcohol/100 mL blood, or 0.04 g alcohol/210 L breath.)
Experimental:
A simulator, thermostatically controlled at 34.0 +/- 0.1 degrees C, was used to produce constant samples of simulated breath alcohol concentrations of 0.02%, 0.04%, 0.08% and 0.10% (g alcohol/100 mL blood or g. alcohol/210 L breath) at a flow of 12 liters/minute. Standard simulator solutions were supplied by Toxtrap, Inc. Each device tested was attached to the simulator and the simulator's headspace blown through the device for ten seconds. The device was removed, shaken and observed one minute, two minutes and three minutes after exposure. The color of the crystals wee recorded after each observation. Observations were made in white light.
Comments:
All readings are subjective. The color change was normally observed as a gradient along the tube. There were always some unchanged or more pale yellow crystals present in the device.
The tests described in this document are not intended to imply approval of Toxtrap, Inc. of the application of BreathScanŽ devices for blood ethanol determination.
Buy BreathScan alcohol and drug testing kits
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