AlcoSense Mouthpieces (20-pack) fits AlcoSense Excel, Pro and Ultra.

• Always use a mouthpiece on your breathalyzer

The mouth pieces have a coarser inner surface which helps to reduce condensation in the alcohol meter and improves the accuracy of reading. Always use a mouthpiece on your breathalyzer, it reduces the risk of saliva entering the meter, which improves reading with your breathalyzer.