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These tiny particles when packed in smaller columns of 0.4 x 25 cm require
pumping of the mobile phase to overcome the pressure drop of 1000 to 3000 psi.
Because of the shallower pores in these packings, mass transfer is faster,
37-50 jim; mobile phase, hexane/isopropanol/methanol. (b) Column. 240 x 2.3
cm i.d. 37-80 urn silica: mobile phase, hexane/isopropanol/methanol (5:2: 1), flow
rate 34 ml/min: injected sample, 5 g. [From Snyder. L. R. and Kirkland, J. J. ...
Using a low pH mobile phase required for the reversed phase separation of
peptides and proteins, essentially no change in column performance was
observed between the first and forty-first injection. Polymers have also been
crosslinked on ...
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Liquid Alkali Metals 1 John F Schenck
Liquid Chromatography 13 Russell L Rasmussen Joseph
Liquid Crystal Devices 41 Manifold Geometry
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