The Alcohawk PT500 alcohol tester is as good as a much larger machine costing twice as much. I used
to have a much larger fuel cell machine until it was stolen out of my car when I brought my car to be
serviced.I recently bought the PT 500 from Amazon. The accuracy is listed as .005 + or - at 05%. I would
say it's probably more like + or - .001. It quickly always gives the same values and maybe down .001 as the
kidneys uses the alcohol. This machine is necessary if you drink and drive afterwards. A wonderful machine.Get more detail about AlcoHAWK PT500 Breathalyzer.
