Filtration (过滤) The separation of solids form a suspension in a liquid by means of a poroous medium or screen which retains the soilds and allows the liquid to pass is termed filtration. 形成一个分离的固体悬浮在液体通过的多孔介质或屏幕的固体颗粒和保留允许液体通过被称为过滤。 In general,the pores of the medium will be larger than the particles which are to be removed,and the filter will work efficiently only after an initial deposit has been trapped in the medium.In the chemical laboratory, filtration is often carried out in a form of Buchner funnel ,and the liquid is sucked through the thin layer of particles using a source of vacuum:in even simpler eases the suspension is poured into a conical funnel fitted with a filter paper. 一般来说,孔隙介质的颗粒将大于中移走,并将与过滤能工作的很有效率只有经过一初始存款已陷于媒介。在化学实验室,进行过滤是经常在某种形式的Buchner漏斗,液体吸通过颗粒的薄层使用的一个来源:甚至在真空悬架系统是简单的简化了倒进一个锥形的漏斗配有一个滤纸。 In the industrial equivalent of such an operation, difficuities are involwed in the mechanical handling of much larger quantities of suspension and solids .A thicker layer of solids has to form and, in order to achieve a high rate of passage of liquid through the solids
Contact Us: https://www.doczj.com/doc/7014080912.html,/contact Supor? PES Membrane Disc Filters Description High Flow Rate Membrane Optimized for Biological, Pharmaceutical, and Sterilizing Filtration Requirements Fast filtration with superior flow rates and high throughputs Low protein binding and extensive drug compatibility for critical applications Saves time and money with fewer filter changes per sample volume 142 and 293 mm discs feature printed tab for instant recognition of pore size and lot number May be sterilized by gamma irradiation, EtO, or autoclaving Application Suited for biological, pharmaceutical, and sterilizing filtration requirements Available for microbiological analysis in individual sterile packaging Specifications Filter Media Hydrophilic polyethersulfone (PES) Pore Size 0.1, 0.2, 0.45, and 0.8 μm Diameter 13 - 293 mm Typical Thickness 0.1 μm: 132 μm (5.2 mils) 0.2 μm: 145 μm (5.7 mils) 0.45 and 0.8 μm: 140 μm (5.5 mils) Typical Water Flow Rate mL/min/cm2 at 0.7 bar (70 kPa, 10 psi) 0.1 μm: 5 0.2 μm: 26 0.45 μm: 58 0.8 μm: 165 Maximum Operating Temperature - Water 100 °C (212 °F) Extractables - Soxhlet Extraction < 4% Minimum Bubble Point - Water 0.2 μm: 3.5 bar (350 kPa, 51 psi) 0.45 μm: 2.5 bar (250 kPa, 36 psi) 0.8 μm: 1.0 bar (100 kPa, 15 psi) 60% IPA/40% H2O (v:v)