There are three drop test comparison angle, strictly control each level, to ensure the highest quality product condition: After coating or surface treatment process, the naked eye can not distinguish the treatment effect, whether anti-fingerprint and wear condition by drop angle measurement, to reduce rework or waste defective products. Drop angle measurement instrument Rationale: defined as the angle of water droplets in solid and liquid. Three-phase interface of gas, gas - liquid interface and solid - liquid interface angle between the water droplet angle display scale solid surface contact angle humidity high speed tester, the use of most solid objects on the droplet was measured low contact angle indicates the humidity high (hydrophilic) surface easy to paste. High contact angle of water droplets represent a hydrophobic surface display dynamic contact angle tester, the surface of the organic pollution is heavy or poor surface adhesion. The contact angle of the liquid and solid surface like a flat contact, through a liquid - measuring out the end point of contact and a solid surface gas junction in the curve drops - solid. 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, (γLD contact angle of dispersion forces, γLP polar forces) and measure the liquid contact angle on a solid surface angle θ dynamic drop tester, the side through the program can calculate the surface energy of the solid. When calculated using the Owens surface energy, selected two test solution must meet the following conditions: γLP / γLD values ??of the two liquids can not close, and the gap between the bigger the better; the contact angle of the high-speed tester, the contact angle, Sheng Ding instrument provided by the Dongguan City Ding Sheng Precision Instrument Company. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) (www.dgshengding.com) strong, credible, in Dongguan, Guangdong specialized instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shengding instrument into the brilliant and you work for a better future!