Contact angle measurement Conghua | ShengDing Instruments | water contact angle measurement provided by the Dongguan City Sheng Ding Precision Instrument Co., Ltd .. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.gdshengding.com) is a specialist in the "contact angle measurement, tensile tester, drop angle detector, tables, interface equipment," the company. Since its inception, we adhere to the "honesty, sound management" approach, the courage to participate in healthy competition in the market, so that the "" brand has a good reputation. We adhere to the "service first, customers first" principle, so ShengDing instrument has won the trust of customers congregation in chemical instrumentation, and establish a good corporate image. Special Note: This information is for reference pictures and information, please contact us to obtain the most accurate information, thank you! Measures related to measuring the contact angle in front of the analyzer were introduced, should pay attention to the following two questions about the implementation: Balancing time and system temperature stability, when the system is not balanced, the contact angle will change the water contact angle measurement, which The contact angle is referred to as a dynamic contact angle, dynamic contact angle on a number of research activities of the larger viscosity liquid on a solid planar or spreading is important (because the viscosity is high contact angle measurement, the time length of the balance). Together, the temperature change on larger systems, because of changes in surface tension, contact angle will change the contact angle measurement outlets, therefore, if one has Kipping reach equilibrium contact angle measurement system powder, changing the angle of contact, can related to the temperature change, impact judgment briefly element approach is to balance the impact time is usually in one direction, and the temperature fluctuations can be formed to increase or decrease γ. In addition to balancing 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 0.6 ~ 1.0ul are the best, the droplets are too small by Volatile is too large, the droplet is too large gravity factor significantly. Note that the test should not be free-falling droplets dripping on the solid surface and the sample platform should rise, touch suspended in the lower end of the injector after the droplets fall, the droplets remain on the solid surface. Of course, if the choice of fully automatic operation of the model above problem does not exist. The method of analysis of material particles to have a lot, has developed and produced more than 200 kinds of works based on a variety of analytical measurement devices, and there are always new particle size measurement methods and instrumentation developed. Although the method of particle size analysis varied, basically can be summarized as the following method. The traditional methods of particle sizing screening, microscopy, sedimentation, electric induction method, a method recently developed laser diffraction method, laser light scattering, photon correlation spectroscopy, electron microscopy image analysis method based on particle step Brownian motion of the particle size measurements and mass spectrometry and the like. Wherein the laser scattering method and photon correlation spectroscopy method because of high speed, wide measurement range, the data is reliable, reproducible, high degree of automation, ease of on-line measurement and the advantages of being widely adopted. (Particle size analysis.