ChromSpher 

Agilent's ChromSpher column line offers wide selection of reversed-phase materials that offer unique selectivity and an unbonded silica column for normal-phase chromatography. This column line is unsurpassed in column performance and efficiencies. ChromSpher material also serves as a basic for many of our application specific columns. These application specific columns show the same high efficiencies as the more general ChromSpher line. The only difference is application specific columns are quality controlled using compounds associated with a particular application. Please call for ordering details.