The contact angle of water droplets angle measurement, ShengDing precision instruments (certified), the contact angle provided by the Dongguan Sheng Ding Precision Instrument Company. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) is specialized in the "contact angle measurement, tensile tester, drop angle detector, surface and interface equipment, mold Monitor" of the enterprise, the company of "honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr. About the way in front of the contact angle measurement analyzer were introduced, the implementation should pay attention to the following two questions: Balancing time and system temperature stability, when the system is not balanced angle will change the contact angle measurement, contact, then The contact angle is called a dynamic contact angle, dynamic contact angle of the liquid on a larger number of research activities in the viscosity or a solid plane spreading important (due to viscosity, long balancing time). Together, the temperature change on larger systems, because of changes in surface tension, contact angle will change, therefore, if one has been based Planar balanced system, the contact angle change, the ability to change the temperature related factors affecting briefly discrimination approach is to balance the impact time is usually in one direction, and temperature fluctuations can increase or decrease the formation of γ. In addition to balancing the time and temperature, the effects of exposure to the elements as well as the angle stable contact angle hysteresis, and adsorption. When the contact angle measurements, the droplet size and the contact angle is no linear relationship between the amount of sample is 0.6 ~ 1.0ul best droplets too influenced by volatile large, the gravity factor drops too significant. Note that the test should not be free-falling droplets dripping on a solid surface, but should be increased sample platform, suspended after touching the lower end of the injector droplets fall, the droplets left on the solid surface. Of course, if you choose automatic model does not exist above the operating problem. Electrophoresis (electrophoresis) in the electric field force, the charged particles in the suspension system, the contact angle of water droplets directed migration angle tester, the particle size and particle size mobility related to its mobility by measuring the particle size can be calculated. Electrophoresis can measure the particle size of less than 1 ?? m, but only get an average particle size, it is difficult to measure the particle size distribution. Fisher method (fisher? Method) Fisher method first law of the land belonging to the steady flow of gas (laminar) state. Under constant pressure, the air first through the measured particle? Accumulation body, and then flows through an adjustable needle valve atmosphere. According to the air flow resistance and stole particles generated during accumulation body surface area can be obtained and the average size of the particles. Fisher method is a relative measurement method, size book called the Fibonacci average particle size, can not accurately reflect the true size of the particles, nor other particle sizing methods and the results were compared contact angle, can not accurately reflect the particles true particle size, the particle size can not be measured, and the results obtained by the method other comparing only used to control the process and product quality. Typical products are the United States Fisher Number sieve grade powder tester.