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EquipNet is the world’s leading provider of used chromatography columns. Our exclusive contracts with our clients yield a wide range of used chromatography columns equipment from a number of respected OEMS, including Millipore, Bio Rad, General Electric, Amersham Biosciences, Pall Corporation, and many others.
Chromatography isn't only used to find substances that shouldn't be there. It's also a great way to ensure the things you do want show up in the same concentration every time.
How does chromatography work? A look at some of the new materials being used in chromatography columns. To catch a cheating athlete by Rajendrani Mukhopadhyay, Chemistry World, 8 February 2010. Exploring the chemical tricks used to trap drug cheats. Hope for natural insect repellent: BBC News, 4 July 2006. How chemists are using gas chromatography to develop a new mosquito
What Is Flash Chromatography? The crude reaction mixture is passed through a flash chromatography column and the pure drug compound is isolated by selective elution. If you have ever taken a prescription medication, the chances are very high that flash chromatography was used at some point in the research and development of that drug. So,
What is HPLC? A pump forces a solvent through a column under high pressures of up to 400 atmospheres. The column packing material or adsorbent or stationary phase is typically a granular material made of solid particles such as silica or polymers. The pressure makes the technique much faster compared to column chromatography.
3. When we first pack a column, we dry pack it with silica gel, then do one wash with 100% EtOAc, then one wash with 100% hexanes. The volume of eluent is ~10-20% larger than the volume of silica. Now you are ready to start your chromatography. 4. If you did not have any baseline impurities in your initial mixture; you can reuse the columnLast modified: March 01 2021
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