“Breathalyzer Buying Guide: 9 Things You Should Know About Personal Breathalyzers”
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How Does It Work?
This is How the BreathKey Digital Keychain Breathalyzer Works:
1. Turn on the BreathKey by simply pressing the button.
2. Blow into the BreathKey for about four seconds until
you hear the solid beep.
3. Wait for about four or five seconds while the BreathKey
calculates your BAC.
4. Read your BAC. The BreathKey will automatically shut off
after ten seconds.
It’s a common sight in American culture today to see a person use a breathalyzer. Police officers use them to determine whether the person they've pulled over is legally intoxicated and the legal system uses the numbers that the breathalyzers produce for drunken driving convictions.
Due to the general public being exposed to breathalyzers, it’s assumed that most people know how to use a breathalyzer. That would not be an accurate assumption.
Most drinkers would know what a breathalyzer is for but would not know how to use one or even how it works. What does a breathalyzer really measure and how accurate is it?
A breathalyzer uses a person’s breath sample to determine what their blood alcohol (BAC) level is. There is assumed to be a direct relationship between the concentration of alcohol in a person’s breath to that in their blood.
Unlike non-alcoholic beverages, the body does not digest alcohol. Rather, the alcohol is absorbed through the tissues in a person's mouth, throat, stomach, intestines and organs. Once the alcohol is absorbed into the body, it is automatically transmitted into the bloodstream. It continues to circulate in the bloodstream until it is filtered out through the liver or expelled through evaporation in the lungs. A breathalyzer can then measure the person’s BAC level through his or her breath. A BAC of .08% is considered the legal limit for driving while intoxicated (DWI) in all states in the US, although a driver can be convicted of driving under the influence (DUI) for a BAC level as low as .05%.
