国产精品国产三级国产专区

<acronym id="czmjo"><label id="czmjo"><menu id="czmjo"></menu></label></acronym>
        1. ACE色譜柱|菲羅門色譜柱|手性柱|氣相柱|SPE|高效液相色譜柱
          Solid-Core Mixed-Mode Stationary Phases

           

          SIELC Technologies has developed mixed-mode Columns based on solid-core-porous-shell particles. This separation media combines the efficiency of solid-core technology with the unique selectivity of Ion-Exchange (IE), reverse phase (RP), surface chemistry and ion-exchange HILIC surface.

          Combination of solid core particles and IE with RP or HILIC chemistry offers:

          • Fast separation
          • Working pressure within limits of conventional HPLC
          • Unique selectivity profile
          • Retention of compounds difficult to retain by RP chromatography
          • Increase column loading capacity
          • Adjustment of selectivity by mobile phase pH, ion strength, and organic concentration and composition

           

          Columns available in Solid-Core format with 2.7 μm particles:

          Column Ion-exchange Separation mode
          Primesep 100 Cation exchange RP
          Primesep SB Anion exchange RP
          Primesep S Cation exchange HILIC

           

          One disadvantage of the solid core support in HPLC is lower capacity when you compare it to regular through porous material. However, the mixed-mode materials demonstrated much higher loading capacity compared to regular RP phases (Nicola H. Davies, Melvin R. Euerby and David V. McCalley, Journal of Chromatography A, Volume 1138, Issues 1-2, 5 January 2007,  65-72). Thus, the mixed-mode surface chemistry compensates for loss of loading capacity of partially non-porous particles.

          Mixed mode columns demonstrate 2D characteristics with independent adjustment of degree of retention based on ionic and hydrophobic mechanism
          Reverse phase mechanism controls by amount of organic modifier in the mobile phase
          Ion-exchange mechanism controls by ion strength and pH of the mobile phase
          This property allows to resolve complex mixtures with polar, hydrophobic, ionic, and neutral compounds

           

          Some separation examples:

           

          全國服務熱線:020-22826668 | E-mail:gz@gzflm.com
          公司地址:廣東省廣州市天河區天河北路179號尚層國際大廈13層(510620)
          Guangzhou FLM Scientific Instrument Co.Ltd
          Floor 13, No.179 of North TianHe Road, GuangZhou, 510620, China
          CopyRight © 2002-2022 廣州菲羅門科學儀器有限公司 版權所有 粵ICP備05059471號
          免責聲明 | 聯系我們 |
          信用中國  
          掃一掃,添加菲羅門公眾號
          国产精品国产三级国产专区
          <acronym id="czmjo"><label id="czmjo"><menu id="czmjo"></menu></label></acronym>