The contact angle measurements: Owens two-liquid method to calculate the solid surface energy (solid surface tension) The instrument also provides a two-Owens calculated the surface energy of the function, as follows: using known liquid surface energy γL and its sub-γLD , γLP contact angle, (γLD as dispersion forces, γLP polar forces) and measure the liquid on the solid surface contact angle θ SDC-300 contact angle measurement, side by the program can calculate the surface energy of the solid. When calculated using the Owens surface energy SDC-80 contact angle measurement, selected two tests were the following conditions must be met: γLP two liquids / γLD value can not close, and the gap between the bigger the better; Notes 1, when measuring the contact angle, to the rotary sample stage removed, measured in intravenous French sample stage. 2, choose a different area of ??the test range of material surface for micro-injector (10μL, 100μL). 3, the measured roll angle, click on the switch to open. 4, after the end of the measurement camera system to cover the click switch closed SDC-200 contact angle measurement, the light source is closed, turn off the computer, the system is powered off. SDC-400 contact angle measurement, Sheng Ding equipment (certified), the contact angle provided by the Dongguan City Ding Sheng Precision Instrument Company. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) (www.dgshengding.com) Dongguan, Guangdong, dedicated instrumentation leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Sheng Ding instrument in leadership with the staff warmly welcome all inquiries negotiations to create Shengding instrument better future.