The contact angle wholesale, ShengDing instrument (certified), the contact angle is provided by 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, tables, interface instrument" 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. The so-called contact angle refers to drop a droplet on a solid horizontal plane, solid appearance on solid - liquid - gas three-phase border point, the gas - liquid interface and solid - liquid interface of two tangents when the liquid sandwiched therebetween the angle formed. The contact angle measuring instrument used to measure the primary liquid contact angle on a solid, a liquid that is solid wettability, the instrument can measure a variety of liquid contact angle on a variety of materials. The instrument for oil, printing and dyeing, pharmaceutical, coating, dressing and other professional research and production has a very important role. When the droplets in the space free from influence of the force field, due to the presence of the interfacial tension and cylindrical spherical. However, when droplets with a solid planar contact, which depends on the shape of the droplet after all internal cohesion and adhesion to the relative magnitude between the droplets and solid. When a droplet placed on a solid flat temperature contact angle of droplets in a solid appearance can automatically start to shop, or to the appearance of a solid contact angle of a droplet must exist. Currently Zetasizer more to 500 ~ 700nm wavelength laser as the light source, therefore, the first community-type particle size analyzer for particle size at 5 ?? m more accurate results than the contact angle of factory sales, and for particle size less than 5? ? m particles are corrected using a mathematical Michaelis. Therefore, the contact angle of the manufacturers, she measuring submicron and nanoscale particles have a certain degree of error, even difficult to accurately measure. For the scattering of laser particle size analyzer, the direct scattering of scattered light information collected for processing, so that she was able to accurately determine the sub-micron, nanometer particle contact angle, while the size of the particles larger than 5 ?? m concerned, laser scattering particle size analyzer can not come up with accurate measurements. Laser light scattering method can measure the particle size distribution of 20 ~ 3500nm, access to the equivalent spherical volume distribution, measurement accuracy, speed, representative, reproducible, suitable for measuring the mixed materials. The disadvantage is the requirement for the high detector, compare the difference between each measurement instrument. Photon correlation spectroscopy method can measure the range of 1 ~ 3000nm particle size distribution, particularly suitable for ultra-fine particle size analysis of nanomaterials. Measuring the volume of distribution, high accuracy, high speed, wide dynamic range, you can study the stability of the dispersion system. The disadvantage is not suitable for fast sample size distribution measurement.