人人做天天爱夜夜爽2020

<listing id="bxd1p"><ins id="bxd1p"></ins></listing>
<listing id="bxd1p"><cite id="bxd1p"><dl id="bxd1p"></dl></cite></listing>
<th id="bxd1p"><thead id="bxd1p"><del id="bxd1p"></del></thead></th>
<listing id="bxd1p"><ins id="bxd1p"></ins></listing>
<listing id="bxd1p"><ins id="bxd1p"></ins></listing>
<th id="bxd1p"></th>
進口和國產色譜柱|菲羅門色譜柱|手性柱|氣相柱|SPE|高效液相色譜柱

Mixed-mode Stationary Phases

For decades, liquid chromatography stationary phase design has been dominated by the idea of elimination of multiple, or “unwanted” interactions that occur in mixed-mode separations. Reverse-phase chromatography is making the point of eliminating silanol interactions with amine-containing analytes by developing base-deactivated phases.

Within the same trend, adsorption interactions are considered undesirable as opposed to steric interactions in size-exclusion chromatography, and non-ionic interactions are generally viewed as complications in ion-exchange and ion-exclusion chromatography.

However, there are ways to benefit from multiple interactions on the stationary phase. SIELC Technologies introduces Primesep® HPLC columns, specifically designed for mixed-mode separations and capable of separating a tremendous range of compounds by different separation modes based only upon mobile phase selection. MORE

Currently, SIELC Technologies offers the following types of silica-based mixed-mode phases.

 Primesep A - Acidic
Primesep A - Acidic
 Primesep B - Basic
Primesep B - Basic

Primesep C - Complex
Primesep C - Complex

Primesep P - Phenyl
Primesep P - Phenyl
Columns with negatively charged functional groups due to the embedded anionic ion-pairing reagent.
Primesep A
Strongest acidic phase
Primesep 100
Strong acidic phase
Primesep 200
Medium acidic phase

Choose the correct column by their functional group acidity to match the pKa value of your basic compounds. MORE

Columns with positively charged functional groups. Primesep B
Strong basic column for use with TFA, phosphoric or perchloric acid solutions in a mobile phase. Primesep B2
Weak basic column for ammonium acetate buffered solution. MORE
Column with unique unparalleled selectivity. Primesep C
Combined reverse-phase and complex formation properties for interaction with amines, sulfonium, phosphonium and metal ions. MORE
 Three interactions within one column:
  • Reverse phase
  • Pi-pi
  • Strong cation exchange

Primesep P
Choose for separation of structural isomers of aromatic compounds.
MORE

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
人人做天天爱夜夜爽2020
<listing id="bxd1p"><ins id="bxd1p"></ins></listing>
<listing id="bxd1p"><cite id="bxd1p"><dl id="bxd1p"></dl></cite></listing>
<th id="bxd1p"><thead id="bxd1p"><del id="bxd1p"></del></thead></th>
<listing id="bxd1p"><ins id="bxd1p"></ins></listing>
<listing id="bxd1p"><ins id="bxd1p"></ins></listing>
<th id="bxd1p"></th>