1Manufacture for alcohol Tester 2OEM for alcohol Tester 3Display: 3 Digits (%BAC) 4Quick response ... suggest to wait 20 minutes before detection, because alcohol takes about 20 minutes from digestive organs into the ... blood, and the residue in the mouth of alcohol also need time to dissipate.2, to get ... not allow any liquid into the furnace. The tester for users to provide personal reference data, and ...