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How To Determine How Much Material To Load On Preparative TLC Plates by Robert Kerr
Objective To demonstrate how much material can be loaded on a Preparative Thin Layer Chromatographic Plate. Questions [...]
TLC is More Than Normal Phase by Robert Cotta
Thin-layer chromatography or TLC is a well-established, widely used, technique that is an inexpensive and rapid method to separate [...]
Sorbent Technologies Silica Gel Comparisons by Robert Cotta
Background When comparing silica gel there are chromatographic parameters that are important to consider. These parameters are retention [...]
CHIRAL GC (PART 2 OF 2)
The separation potential of chiral GC phases In the following, we wish to give some information for the selection of [...]
CORE-SHELL PHASES (PART 1 OF 2)
CORE-SHELL PHASES – HIGHEST EFFICIENCY FOR ALL HPLC INSTRUMENTS In the past years, manufacturers of HPLC columns and instruments have [...]
SPHERICAL SILICA: A WISE INVESTMENT IN FLASH CHROMATOGRAPHY
By Robert Cotta, Raymond Lombardi, and Robert R. Kerr, Ph.D. Introduction Flash chromatography is a well-established, efficient, and rapid [...]
STEVIA ANALYSIS (PART 1 OF 2)
HPLC separations of stevia ingredients The herbal sweetener stevia was allowed as a food additive in the EU in December [...]
FLASH CHROMATOGRAPHY – THE ROLE OF SILICA GEL
Flash chromatography works very well with silica gel. To understand why this is so it is important to consider the [...]