Contact angle tester; sessile drop method using a step Introduction (θ / 2 method): Start: Start contact angle measurement applications. Drop method steps: First, adjust the level, then the sample is placed in the table, the use of micro-injector to adjust the amount of liquid droplets suspended droplets leave the surface tension meter, so the needle to form droplets, turn the knob to the table Move ultralow interfacial contact angle measurement, so the sample surface in contact with the droplets, and then move down the table, you can leave the sample droplets. Click frozen, you can press the following method for measuring the contact angle. The measurement scale shift by clicking on the shortcut button on the left or right or up or down move, measuring tape and tangent to the droplet edge displayed. Then click on the down down the intersection measuring tape coincides with the droplet edge, click the L button to intersect with droplets measuring tape side, then click on the calculation, you can find the contact angle. Contact angle measurement steps 1, turn on the computer, open source, open the desktop software, contact angle measurements. 2. Click to activate, clear picture appears on the desktop, adjust the infusion measurement platform into position, put the object, adjust the height pipette, measure. 3, when the droplets to fall not down, move the platform, in contact with water droplets, and then slowly falling, until the droplets stable, freeze frame, starting with software measurement. 4. At the end of the experiment, turn off the software, then close the light source, the CCD cover, and finally shut down the computer, complete the experiment. Table interfacial tension instrument, Sheng Ding equipment (certified), the interface 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.