For example, an 80-proof beverage has an ethanol concentration of 40 percent. The ethanol concentration of distilled spirits usually is expressed in terms of proof, which is a number corresponding to twice the ethanol percentage.
These include rum, whiskey, gin, vodka, etc. It is possible to do this because ethanol boils at a lower temperature than does water.ĭistilled spirits is the name we give to high-ethanol-concentration beverages produced by distillation.
This involves heating the beverage until the ethanol "boils off", then collecting the ethanol vapor. Obtaining a higher ethanol content requires a process called distillation. At that concentration, the yeast dies, so the fermentation stops. When an alcoholic beverage is produced by fermentation, the maximum ethanol content that can be reached is about 14 percent. However, most of the ethanol in the world didn't ferment naturally, but was produced under human supervision. This can occur naturally, as yeast spores in the air come into contact with decomposing fruit and grains. That is a kind of decomposition in which the sugars in fruit, grains and other organic materials combine with yeast to product the chemical we call ethanol. Ethanol production starts with fermentation. Ethanol is beverage alcohol, the active ingredient in beer, wine, whiskey, liquors, etc. Two of ethanol's best known analogs are methyl alcohol (or methanol), commonly called "wood alcohol", and isopropyl alcohol (or isopropanol), also known as "rubbing alcohol".Įthanol is what interests us, because it is the kind of alcohol that features prominently in impaired driving. Ethanol is the variety of alcohol that has two carbon atoms. The "ET" stands for "ethyl" and the "OH" represents the single oxygen atom and one of the hydrogen atoms, bonded together in what chemists refer to as the "hydroxy radical". The ingestible alcohol is known as ethyl alcohol, or ethanol. This is done directly when dealing with a blood sample, or indirectly by analyzing the percentage in a breath sample and applying conversion ratios to estimate the percentage in the blood these conversion ratios used in DUI cases are inaccurate in that they simply represent statistical averages. Careless Driving Causing Bodily Injury or DeathīAC Physiology Blood & Breath Alcohol Physiologyīlood-alcohol analysis is simply the attempt to measure the percentage by weight of alcohol within the DUI suspect's blood at the time of testing.
#Bac stands for how to
How to Protect Your Rights During a DUI Stop.
#Bac stands for plus
signal detection, visual search), impaired perceptionĬlear deterioration of reaction time and control, slurred speech, poor coordination, slowed thinkingĪll of the above plus reduced ability to maintain lane position and brake appropriatelyįar less muscle control than normal, potential for vomiting, major loss of balanceĪll of the above and substantial impairment in vehicle control, attention to driving task, and visual and auditory processing Loss of concentration, short-term memory loss, impaired speed control, reduced information processing capability (e.g. balance, speech, vision, reaction time, hearing), difficulty detecting danger, impaired judgement, self-control, reasoning and memory Reduced coordination, reduced ability to track moving objects, difficulty steering, reduced response to emergency driving situations focusing eyes), impaired judgement, lowered alertness, release of inhibition Some loss of judgement, relaxation, slight body warmth, altered moodĭecline in visual functions (rapid tracking of moving target) and ability to perform two tasks at the same time (divided attention)Įxaggerated behaviour, loss of small-muscle control (e.g. If you’d like to try and cut down your consumption, read our article on how to reduce alcohol. A standard alcoholic drink is a 330ml bottle of beer (ABV 5%) or 125ml glass of wine (ABV 12%). The number of drinks above represents the approximate amount of alcohol that a man weighing eleven and a half stone would need to drink in one hour to reach the listed BAC in each category. The Centre for Disease Control and Prevention in America has compiled the following chart to illustrate the meaning of BAC. BAC alcohol levels can affect behaviour, judgement, physiology and driving ability.
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