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.
Material characteristics
75SL-II-PREP
140SL-II-PREP
Silica gel
high purity porous spherical silica
Average particle size
75µm
140µm
Average pore size
approx.120Å
Specific surface area
approx.300m2/g
Application
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.
