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In previous posts I have touched upon various sample loading options and how they impact flash chromatographic performance, primarily in normal-phase flash purification. As the use of reversed-phase f...
This is an age-old question that has been around a long time, perhaps as long as me (and I have been around a while) – “Does silica dissolve in methanol?”
When it comes to the purification of polar organic compounds many chemists turn to normal-phase flash chromatography with dichloromethane and methanol as the mobile phase. This solvent system often ca...
Compound detection challenges are, for many chemists, a part of life. In a previous post I discussed how wavelength focusing can help your flash system detect and fractionate compounds with poor chrom...
Mass spectrometers today are typically available with either Electrospray Ionization (ESI) or APCI (Atmospheric Pressure Chemical Ionization) sources. That’s really nice but, how do you know which sou...
Have you ever experienced compound tailing or streaking on your TLC plate or flash chromatography results and wondered what in the world is going on here? Well, there can be multiple reasons for this ...
Compounds precipitating during flash chromatography is at best an inconvenience when working up your crude reaction mixture. Precipitation during purification typically happens in the column or in the...
Up to six compounds can be easily separated with an automated step-gradient optimizer embedded in modern flash chromatography systems.
slash column chromatography has been practiced by chemists since the 1970s. That practice requires the silica in the column be properly wetted to remove trapped gasses and ensure uniform flow (remembe...
On a beautiful sunny day in Chapel Hill, North Carolina, I travelled to the University of North Carolina campus where I spoke with Dr. Alfredo Picado about how using our new Sfär columns has impacted ...