The COSMOSIL 5C18-PAQ
is the new member of our C18
column family already including the monomeric type MS-II, the
polymeric type AR-II. This new column maintains stable retention
time even in 100% aqueous mobile phases because the silica is only
partially coated with C18
chains. The new polymeric linking style gives a strong acidic
resistance to this column.
Stable retention time in 100% aqueous mobile phase
Good separation of hydrophilic compounds
Resistance for acidic mobil phase
Low carbon content controlled packing material
Polymeric type linked C18
The figure shows the change of retention time for Thymine with
100% aqueous mobile phase (20mmol/l phosphate buffer pH7). After
analyzed 4 times (1 hour), flow of mobile phase were stopped for 1
hour, and then similarly analyzed again. The conventional C18
showed change of retention time, but COSMOSIL 5C18-PAQ
mantained stable retention time.
