In most applications in which nonpolar to moderately polar solvents are used; we recommend an intermediate-polarity (IP) deactivated guard column (available in fused silica or MXT ).
For most polar solvents, we generally suggest a polar deactivated guard column.
For applications that require a highly inert surface to minimize analyte breakdown, such as pesticides analysis, we recommend Rxi guard columns.
For amines or other basic compounds, we offer base-deactivated guard columns.
For several of our common stationary phases, we offer Integra-Guard columns: analytical columns with integral guard columns that eliminate the mechanical connection between the guard column and the analytical column.