The DSA25 Expert is designed for contact angle determination and surface energy of solids, as well as the surface tension of liquids. This will allow the evaluation of the interaction between solids and liquids, and thus, control the wetting quality and coating processes. The instrument is equipped with an automated dual dosing system to enable surface energy determination quickly and accurately. In addition to the rapid change of test liquids, the advantage of the system lies in the high reproducibility of drop volumes.