“I bought 10 of the .08 BAC testers about one year ago.
I carefully calculated my BAC based on my weight to alcohol consumption, ratio.
When I was just Below the .08 it stayed Yellow. When I was Above the .08, even by just a small margin based on my calculations it turned to a Blue-ish color. There was a definite Color change, so someone would know NOT to drive.
If you're not gonna be drinking and driving a lot, this is the one for you. It is 99 % accurate. Some other testers, even BACtracks have to be calibrated, NOT the case here. Hope this helped someone out.”
