Each mouthpiece has a respiratory lock that prevents saliva or germs from being inadvertently inhaled when blowing into the channel of a breathalyser. Each mouthpiece of the ACE series is individually packaged and therefore hygienically safe. The mouthpieces for breathalysers from the ACE range are intended for single use. This means that a new mouthpiece should always be used for each person and test. https://elecena.pl/product/20960692/100175-mouthpieces-dr-ger-innomark-pack-of-25 2022-06-05 https://elecena.pl/product/20960692/100175-mouthpieces-dr-ger-innomark-pack-of-25 2025-09-08