Chromatographic material was delivered into fused silica capillary col
umns mainly by the use of sedimentation by gravity. After sedimentatio
n of the packing material, the columns were pressurized at 8000 psi an
d evaluated for capillary electrochromatography (CEC). The capillary c
olumns were tested using a commercially available capillary electropho
resis unit. Under typical CEC conditions, the capillary columns packed
by gravity showed reduced plate heights below 2 with a reproducibilit
y of less than 9% RSD.