When it comes to wacky lab equipment, I have to admit that the Chromatotron is one of my favorites. It is essentially a radial prep TLC accelerated by centrifugal force. Other than speed, the other advantage over prep TLC is that you don’t have to scrape your products off the plate. Instead, you collect fractions out of the bottom like you would from a column. The best part is saying “Chromatotron” in your dissertation defense with a straight face.
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With the Chromatotron we can purify in 15 minutes and spending no more than 300 mL of eluent up to 1.0 grams of sample. The system is extremely efficient.
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The Chromatotron is indispensable in my work. I may never use my MPLC again, and I certainly will never do linear thick layer chromatography ever again.
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I’ll second A-non-y-mous regarding the Chromatotron. It’s still one of my favorite lab tools. Separations equal to flash but more convenient. Much more convenient and faster than prep HPLC.
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Radial Chromatography (aka Chromatotron)-it really was indispensable for my graduate work (bile pigments), and works 10x better and quicker than a column.
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Ah, the Chromatotron. One of my favorite memories from PhD land was fixing the UV lamp from the UV cabinet above the Chromatotron late one night, to allow me to visualize the bands of anthracene derivatives as they eluted from the plate. Brilliant blue ever widening circles. Beautiful.
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The Chromatotron is obsolete? Say it ain’t so! I used one the other day to separate 100mg each of 2 diastereomers. Sure, it is a glorified record player, but it does the job (and generates some great expressions from folks who have never used one).
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I recently had occasion to use a Chromatotron that you had repaired for Dr. A. McK. I used it to separate geometric isomers, and it turned what is a painful separation by column chromatography into an easy and painless one. So, I am truly a convert, and I have to have one.
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The instruction manual is excellent; so is the Chromatotron.
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You have a Chromatotron? I used to use one of those myself; I’m glad that they’re still around.
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