“DON’T DRINK AND DRIVE”, is the normal warning we always come through. Mixing them can cause haphazard in life. So it is most important to detect and end this problem. However, taking a blood sample in the field for later analysis in the laboratory is not practical or efficient for detaining drivers who are drunk. In order to detect alcohol consumption in human body various devices are used.
Devices work on the basic process of detection which involves analyzing of breath of the suspect. When human consumes alcohol, the consumed alcohol mixes in the blood stream and is been absorbed by cells of each part through which the blood flows. This blood also flows through lungs, when u exhale or blow out into the device which allows you to detect alcohol content in the blood. Alcohol detectors measure the Blood Alcohol Content (BAC) by indirectly measuring alcohol in person’s breath, it is considered per 100 ml of blood. The devices are basically divided into 3 types
- Breathalyzer: Breathalyzers are portable hand held devices which are easy to handle and provide quick results. They are the most commonly used alcohol detectors to measure the BAC approximately by measuring the alcohol in person’s breath. They basically work on the color change principle. Photocells are used to measure color change.
- Intoxilyzer: The results through Intoxilyzer are accurate and reliable. It basically depends on Infrared (IR) spectroscopy and identifies alcohol by measuring the absorption of IR light by bonds of alcohol (ethanol) and change in wavelengths of ethanol bonds.
- Alcosensor: Alcosensor is a hand held, portable preliminary breath test instrument which can be used onsite to measure BAC level. The Alcosensor is based on fuel cell (electrochemical sensor) technology. Any alcohol that is present is broken down chemically. These broken down alcohol molecules in turn triggers release of electrons in proportion to amount of alcohol present in sample. Results provided by Alcosensor are not admissible in court.