The contact angle meter / Goniometer model SL250 provide by KINO Scientific Instrument.

The contact angle meter model SL250 is designed for precise measurements of surface tension and contact angle using the ADSA-RealDrop method. Unlike conventional geometric goniometer models employing circles or ellipses and tangent methods, the SL250 utilizes the ADSA method for fitting the droplet profile. This method, based on the Young-Laplace equation, enables accurate analysis of contact angle and surface tension values. Traditional geometric models may yield angle fluctuations due to volume variations, making it challenging to determine the contact angle value for a given sample.