Design basis of centrifugal process: Settling velocity v = [d² (σ-Ï) / 18η] x ω²r Settling time T (hour) = [2.54x1011x ln (rmax / rmin)] / SN² Example 1: Precipitation of fine particles in ink Particle composition: mineral fume, pine fume, vegetable fume, graphite, etc. are ground to varying degrees. Solvent: pure water or other solvents Average particle diameter: ≤10nm Rotating head: S140AT (10x2ml) Centrifuge tube: 2PA sealed tube or 1PC thick-walled tube. Speed ​​and RCFmax: 140,000rpm, RCFmax = 1,050,000xg K factor: 5 Temperature: 20oC Centrifugation time: 4 hours Acceleration / Deceleration: 9/9 Result of centrifugation: all micro-particles precipitated. Example 2: The sample type is the same as Example 1 Particle composition: fine particles of pure pine smoke or pure mineral oil fume after grinding. Solvent: pure water or other solvents Particle average warp: 20nm Rotating head: S100AT4 (6x3ml) Centrifuge tube: 3PC thick wall tube (actual capacity 2.7ml) Speed ​​and RCF: 100,000rpm, RCFmax = 541,000xg Rotor K factor: 16 Temperature: 20 ℃ Centrifuge time: 2.5 hours Acceleration / Deceleration: 9/9 Result of centrifugation: all micro-particles precipitated. Example 3: The sample type is the same as Example 2 Particle composition: fine particles of pure pine smoke after grinding. Solvent: pure water or other solvents The average particle diameter: 30-50nm Rotating head, centrifuge tube, rotation speed, temperature are the same as the second example Centrifugation time: 1.5 hours Result of centrifugation: all micro-particles precipitated. Example 4: Precipitation of fine particles in pigments, lubricants or paints Particle composition: Grinding fine particles such as oil fume, pine smoke, graphite, and asphalt. Solvent: water or other solvents The average particle diameter: 50-100nm or greater than 100nm Rotating head: S110AT (8x4ml) Centrifuge tube: 5PA sealed tube (capacity 5.1ml) or 4PC thick wall tube (capacity 3.4ml) Speed ​​and RCF = 110,000rpm, RCFmax = 691,000xg K factor: 15 Temperature: 20oC Centrifugation time: 1.5 hours Acceleration / Deceleration: 9/9 The result of centrifugation: all the micro particles are precipitated Note: If the sample volume is large (more than 100ml), the samples of Example 3 and Example 4 can be used with Hitachi CPWX, CP70ME series floor-standing ultra-isolated P70AT rotors. As for the samples of Example 1, Example 2, the reasonable choice is still micro-super. Company Profile: Tianmei (China) Scientific Instruments Co., Ltd. ("Tianmei (China)") is a wholly-owned subsidiary of Tianmei (Holdings) Co., Ltd. ("Tianmei (Holdings)"), engaged in surface science, analytical instruments, life science equipment and laboratories Design, development, manufacture and distribution of instruments; provide complete and reliable solutions for scientific research, education, testing and production. Tianmei (China) has set up offices in 15 cities across the country, including Beijing, Shanghai, etc., to provide convenient and high-quality services to customers everywhere. Tianmei (Holdings) is a supplier of comprehensive solutions for scientific instruments engaged in design, R & D, production and distribution. After listing on the Singapore SGX Main Board in 2004, Tianmei (Holdings) was listed on the Main Board of the Hong Kong Stock Exchange on December 21, 2011 (Hong Kong stock code 1298), becoming the first Chinese analytical instrument industry to be listed on the main board of major international markets the company. In recent years, Tianmei (Holdings) has actively expanded its international market, setting up branches in Singapore, India, Macau, Indonesia, Thailand, Vietnam, the United States, the United Kingdom, France, Germany, Switzerland and other countries. The company has successively acquired many well-known overseas production companies such as Froilabo of France, Precisa of Switzerland and IXRF of the United States, which has strengthened the diversification of the company's products. High Waisted Butt Lifting Pants,Women High Waist Biker Shorts,Drawstring Athletic Track Shorts,Yoga Shorts Leggings Hun Yuan Ya Lian Wan Jia Dian Zi Shang Wu You Xian Ze Ren Gong Si , https://www.ylwjastragalus.com