Description:It is quick and easy to operate and can be read directly by the naked eye through comparison with standard colorimetric cards. dry test strips are used for rapid detection of content in human saliva without the use of instruments and equipment. The sensitivity of the test is up to 0.01% (i.e., 10mg/100m), and numerous studies have shown that the concentration in saliva and blood is almost equal.Product: One-time saliva testerProduct size: 5.5*12cmSmall paper inside: 7cm*4mmMeasurement accuracy: 99.9%Measurement range: 0.00-0.30% BACMeasurement object: drivers and other drunken and dangerous operatorsPackage Listing:1 set of One-time saliva tester