Droplets angle measurement, ShengDing instrument (certified), Yangjiang droplets 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, 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. Principle sedimentation sedimentation (sedimentation size analysis) is based on the particles in the suspension system, the particles themselves neutral (or suffered centrifugal force), suffered buoyancy and viscous resistance of the three balance, and viscous forces obey the principle of Stokes to implement the determination, in which case the particles in the suspension system at a constant angular velocity sedimentation droplets manufacturers, but proportional to the square of the sedimentation rate and particle size. Notably, only to meet the following conditions in order to measure the particle size using the sedimentation method; particles should be close to spherical shape wanted, and the liquid was completely wetted; settling velocity of the particles in the suspension system is slow and constant, but reaches a constant velocity time is short; the particles in the suspension system of the Brownian motion does not interfere with its settling velocity; the interaction between particles does not affect the settlement process. Determination of particle size of sedimentation divided into gravity settling and gravity settling two centrifugal sedimentation method, gravity settling adapted particle size of 2 to 100 particles of the water droplets angle ?? m, while the centrifugal sedimentation method is adapted to a size of 10 ?? m ~ 20 ?? m particles. Due to centrifugal particle analyzer using Stokes principle, so the resulting analysis is an equivalent particle size, particle size distribution for the autumn equivalent weight average particle size distribution. Generally suitable for high-speed centrifugal sedimentation particle size analysis of materials Nali. The method is now more accepted extinction sedimentation method, due to the different particle sizes in the suspension system, the settling velocity is different from the same depth of particle settling time is different, and therefore, the density at different depths in the suspension will exhibit different changes According to the measurement beam passes through the optical density of the suspension system can calculate the particle size distribution. The advantage is to measure the mass distribution. The advantage is a measure of the mass distribution, strong representative test results contrast with the instrument is good, the price is relatively cheap. The disadvantage is that the small particles for test speed slow, poor reproducibility; non-spherical particles of error, it is not suitable for the mixed material, the dynamic range is narrower than the laser diffraction method. Platinum plate method: When the sensed liquid water droplets immersed in the measured angle where the good, around platinum plate would be the effect of surface tension of the liquid surface tension will try to pull down the platinum plate. When the liquid surface tension and other related counterbalance force and equilibrium, sensing platinum plate will stop inside the liquid immersion. At this time, the instrument will measure the balance of the sensor immersion depth drops horn factory sales, and convert it to the surface tension of the liquid. Platinum loop method: As is widely used du Nouy Tensiometer, this method is also known du Nouy method, and consequent easy operation is widely used. Platinum Tour de France said the law is the result of this test section between the liquid sample obtained will form a ring. JK99 Series Automatic tension meter for measuring regular table / interfacial tension, because its simple (one-button automatic), high speed (3 seconds), good repeatability and high measurement accuracy, is currently the most widely used tension meter. The disadvantage is that not measure ultra-low interfacial tension (such as oil and crude oil interfacial tension between the drive should be 10-5mN / m, can not be measured with a series JK99). JK99 Series Automatic tension meter imported sensors, although the cost is much higher than the domestic torsion wire sensors, but to ensure that the measurement accuracy. While using a dual temperature control technology, built-in electric heating or external temperature bath temperature control options. JK99B type must be connected to a computer to use, JK99C type as one of the dual-use, built-in LCD digital display and a small printer that can single stand-alone operation, but also can be connected to a computer to control the dynamic changes observed tension curve. Other parameters such as exactly the same two models of precision.