A breathalyzer is a device that law enforcement uses to measure the amount of alcohol on a driver's breath. The breathalyzer works in a simple fashion. Drivers are asked to blow into a straw attached to the breathalyzer machine. The breath is analyzed and a read of alcohol content is provided to law enforcement. This is one of the ways that police can assess intoxication.
There are flaws with breath testing, however, and a Phoenix DUI defense attorney can help address them. Let's consider the problems with breath tests and then see whether or not you should refuse a breathalyzer test from a police officer.