I am also very surprised that 2 bottles of Whiskey give these low readings. However it is surprising how many people do not understand how little alcohol is needed to bust the limit. For example 4 pints of beer consumed let's say 10 hours before duty (means stop drinking 8 hours before) will get you busted with .03%. Of course each person is different in the in the absorption and metabolisation of alcohol. A good way to check it is to by an alcohol breathalyzer and check yourself. The results might shock you.