Depends on your size and your tolerance to alcohol. It may make you a tad slower.
At least half 5th of alcohol a day
If you have any intention of driving after drinking, do not drive. Any alcohol in your system can mess with your reaction times. A half of a second is all it takes to cause an accident.
The time it takes to pass a breath test after drinking a half pint of alcohol depends on various factors such as your metabolism, weight, and alcohol tolerance. On average, it could take around 1-2 hours to pass a breath test after consuming this amount of alcohol. It's always safest to wait until you are sober before driving or operating machinery.
A breathalyser detects the presence of alcohol in the blood. Alcohol gets into the blood when you drink it. The body processes alcohol at a fixed rate (1 unit, that is 10 ml of pure alcohol, an hour). Therefore if you have consumed 6 units, the breathalyser would still detect the presence of alcohol after 5 hours. If you had just consumed 4 units the breathalyser would not detect alcohol after 5 hours.
Perhaps for a very small child -- say, a two or three year old.
That will depend on a number of factors. Beer varies considerably by alcohol content. A half pint of an IPA could be the same alcohol content as a full pint of a lager. The weight of an individual and the speed they drink it will also factor into the BAC.
My father is a state police man he said it would show up.The ETG test is extremely sensitive, and can detect alcohol from mouthwash. The amount in half a beer would show up for a couple of days at least.
No, diluting alcohol in the system by drinking water 24 hours later will not significantly reduce blood alcohol concentration. The body processes alcohol at a fixed rate, and drinking water will not speed up this process. Time is the only way to decrease blood alcohol concentration as the body metabolizes the alcohol.
Try and remove the glass immediately in a "good faith effort"
Consuming any non-alcoholic beer (misnamed because it contains on-half of one percent alcohol) will result in a positive EtG test.
its on top of the column about half way down