Breathalyzer used for professional purposes, like controlling the employees, making on site tests, etc. mouthpieces are obligatory. For hygienic and accuracy reasons, every test have to be made with a new mouthpiece. Available in box of 250 pcs, these individually wrapped plastic breathalyzer mouthpieces are easily removable from the cellophane wrap. For quantities greater than 1000, please contact us for special bulk pricing options.