An ultra-pure silica gel of more than 99.99% purity is used for
the COSMOSIL SL-II packed column series. Thus, chemical
compounds having carbonyl or phenol hydroxyl groups that could not
be clearly separated using conventional silica gel columns can be
separated with improved reproducibility and with better baseline
resolution.
Material characteristics
COSMOSIL
5SL-II
Silica
gel
high purity porous spherical
silica
Average
particle size
5µm
Average
pore size
approx. 120Å
Specific
surface area
approx. 300m2/g
Scaling up from analytical to
preparative
Several sizes are available for the COSMOSIL SL-II packed
columns for both analytical and preparative applications.
