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Introducing SelectaSol ® a solvent selector that runs rings around other chromatography systems. There's no comparing the TLC results you'll get with our new SelectaSol circular development system for solvent selection. This mini-lab uniquely combines speed and discre- tion of resolution with versatility and low cost of opera- tion—for today's requirements. Let us explain... Low-cost SelectaSol lets you run and compare up to 16 different solvents at one time. Sixteen 40mm, four 87mm, or one 170mm chromatograms can be run on a single, standard-size 20 χ 20cm TLC plate. And without prescoring or channeling the adsorbent surface. The circular chromatographic method results in ex- tremely high resolution of sample components — in a short developmental distance and time, due to progres- sive narrowing of the component bands and suppression of tailing —even for components whose Rf values are fairly close together and can't quite be resolved by linear development. Consider this, too. Each chromatogram is developed from a separate solvent source, within its own "S"-type chamber cell. Since you use the exact amount of solvent needed for each run —as little as 0.3 ml (depending on chromatogram size) —you save on solvent costs. And, 16 different solvents can be run simultaneously on only a small corner of your crowded bench. Ask your laboratory supply distributor, or send for more detailed information. SCHLEICHER & SCHUELL Keene, New Hampshire 03431 Schleicher & Schuell GmbH, D-3354, Dassel, West Germany Schleicher & Schuell AG, 8714 Feldbach ZH, Switzerland Schleicher & Schuell, Inc., Dept. AC-6, Keene, NH 03431 Π Please send SelectaSol Instructional Bulletin C-752. Π Please have a laboratory supply specialist contact me. Name Function Institution/ Company Address City State My major field of interest is _Zip_ CIRCLE 194 O N READER SERVICE CARD Visit our booth No. H-11, ASBC Meeting, June 7-10, 1976.
