When someone's 21st birthday approaches, it signifies one thing: being old enough to legally drink. Being able to go out to bars and drink socially for the first time is an occasion worth celebrating. When it comes to gift-giving, many people will buy the birthday boy or girl a bottle of his or her favorite wine or liquor--so do something different that's also practical.

One of the biggest problems for these new drinkers is that they are probably unfamiliar with being drunk. Certainly, a night of birthday pub-crawling will serve as a prompt introduction to inebriation and the requisite hangover. However, it's often lesser levels of intoxication that are most dangerous--when someone is sober enough to speak clearly and walk out to his car, but his judgment and reflexes are impaired by alcohol.

It's because of these situations that a portable breathalyzer from AlcoTester.com makes a great 21st birthday gift. Inexperienced drinkers may be more inclined to think that they're okay to drive, especially if they have only been drinking socially. A breathalyzer gives a clear, accurate, and instantaneous reading of a person's BAC (blood alcohol content) with a single blow, giving a clear reading of just how intoxicated someone is.

When you see someone who has been drinking, you usually have to rely on your senses to determine whether they are intoxicated. Slurred speech, uncoordinated movements, and alcohol-laced breath are often the surest hallmarks of intoxication, but these clues require context--and can easily be masked. Thankfully, nothing can fool a breathalyzer.

In these situations, a breathalyzer can make all the difference between a good decision and a bad one. Everybody else will make sure that the birthday celebrant has a full liquor cabinet--so you should make sure he or she is safe, visit www.AlcoTester.com today.