From Your Virtual Librarian: How Accurate is that Breath Test?
Breath test are based on assumptions. Assumptions that there is a ratio between the alcohol in the blood and the alcohol in the breath. These assumptions are based on Henry’s law. A law that states in a closed container, at a constant temperature and a constant pressure, you can calculate a ratio between the liquid and the gas. However, the body is not a closed container, and when the body is absorbing alcohol, breath can overestimate the blood by up to 230%. That’s a number that cannot ...read more