The Freedrive 0.25 chemical breathalyzer, in tube format, is a single-use breathalyzer, certified with the NF mark (by the LNE).

Once out of its packaging, you have to perforate the lids at both ends of the breathalyzer tube with the bevelled side of the mouthpiece. Then place the mouthpiece on the tube in the direction indicated and proceed to blow.Wait a few moments for the chemical reaction to take place. The color change of the residue obtained indicates whether the tolerance threshold has been reached or not. A red control tablet allows to validate the duration of the blow.

Reliable and very easy to use, hygienic thanks to its single use and its mouthpiece, to guarantee your safety in all situations!