How does Getxent technology works?

To explain how the Getxent tube works, we consider 2 stages:

1. Impregnation: the concentration of odor molecules in a blank Getxent tube is zero. Outside the blank Getxent tube, the concentration of target odor molecules is higher. There is a difference of concentration in odor molecules between the inside of the blank tube and the outside of the blank tube. This gradient of concentration creates a flow of odor molecules from the outside of the blank tube to the inside of the blank tube. Blank Getxent tube thus absorbs odor molecules.
2. Release (training): thus the concentration of odor molecules inside the impregnated Getxent tube is higher than zero. The concentration of target odor molecules inside the impregnated Getxent tube is higher than outside the impregnated Getxent tube. This time, the gradient of concentration is in the opposite direction. Target odor molecules contained in the impregnated tube flow from the inside of impregnated tube to the outside of the impregnated tube. This flow prevents other odor molecules to contaminate the impregnated Getxent tube as they have to move counterflow.

As long as the Getxent tube is close to target, it is being impregnated. After, when used (eg. training), it releases and it is not sensitive to contamination of other odors coming from the outside of the impregnated tube.