10 x high accuracy rapid Saliva Alcohol Test Kits read equivalent blood alcohol concentration by matching pad colour at 2 minutes.
Shows alcohol breath levels of 0.00, 0.02, 0.04, 0.08 and 0.30: this means the tests shows if you are totally sober, or if you've been drinking, whether you are slightly tipsy, a bit tipsy, legally intoxicated - so you should not be driving - or completely, totally drunk
Simple colour chart comparison give levels in 2 minutes