Flumes offer distinct advantages over sharp-crested weirs: 1  For the same control width, the head loss for a flume is about one-fourth of that needed to operate a sharp-crested weir. 2  The velocity of approach is part of the calibration equations for flumes.
How long does alcohol stay in your system saliva tests - How long does alcohol stay in my system for a saliva test? Depends. Alcohol has an approximate detection time of 12-24 hrs, The detection time depends on the maximum level of blood alcohol content (BAC) which can vary. One serving of alcohol can be fully absorbed in the blood stream 30 min up to 2 hrs after intake. The body metabolizes aprox 0.25 oz per hour.
Different tests are capable of detecting the presence of alcohol for different time periods. Here is a list of alcohol drug tests and the answer to how long is alcohol detectable in urine with each test. Breathalyzer Test: 24 hours.Urine Test: 9-13 hours (if traditional method used).Urine Test: 72-96 hours (if done using EGT (Ethyl Gluconoride) metabolite).o, the question of how long alcohol is detectable in urine or how long does alcohol stay in your system depends on the rate at which your body would break it down. Usually, normal human beings metabolize wine at about the same rate which is around 0.015 BAC per 60 minutes.