All calculations are done for an adult male, weighing approximately 68 kg’s, who has eaten a meal.
N.B. This is a rough estimation only, as each person metabolizes alcohol at different rates and times. Women are affected more, quicker, and on smaller amounts of alcohol than men, so need to drink less, and slower than men.
For example, a woman who weighs 45kg’s and drinks 1 glass of wine, her Blood Alcohol Content could = 0,045g! If she had not had anything to eat she could be over the legal limit. 1 Unit = 0.02g in 100 ml blood, or 0.10mg per 1000ml in the breath. It takes the body approximately 1 hour or more, to get rid of one unit. (To be precise – 0.015g)