COSMOSIL SL-II-PREP is an extremely high
performance packing material for preparation with similar
characteristic to the 5SL-II for normal phase chromatography. In
SL-II-PREP the high purity silicagel raw material is treated
during the process to achieve ultra purity. This way SL-II-PREP
excellently separates compounds with carbonyl, phenolic or hydroxy
groups,- a task used to be very difficult so far. We highly
recommend the use of the SL-II series for preparation after HPLC
analysis with 5SL-II.
*All chromatograms shown below are obtained with silicagel
packed into stainless steel columns.
high purity porous spherical silica
Average particle size
Average pore size
Specific surface area
open column chromatography
flash column chromatography
Influence of particle size on peak the shape
The SL-II-PREP is available in three sizes: 5 and 75, 140µm
(particle diameter). The sharpness of the peak is different
depending on the particle size. However, the elution behavior
remains the same.