Guard Column

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Guard Columns

guard column E Guard columns are installed between the injector and the analytical column of a HPLC system, mainly to protect analytical columns. Guard columns are widely used as a cost effective for prolong HPLC column life. Exchangeable cartridge design and unchangeable packing design are offered.
Exchangeable cartridge design contains holder and cartridge column, and the cartridge columns are disposable, easy -to-use, and you can change the guard column in seconds.
Packed design is packed as same as analytical column, using as a guard column.

Selecting packing material
When selecting the packing material for the guard columns, we recommend to choose the same with analytical columns. However, SILFILTER STD C18 is an monolithic guard column, it can fit different kinds of ODS columns.

Selecting dimensions
Particle size : To not alter the chromatography of the analytical column, the packing of the guard column should be the same as the analytical column. Inner diameter : Choose a guard column with an internal diameter similar to the analytical column internal diameter.

Universal self-adjusting connector - Column Coupler, using for when connect guard columns and analytical column.
column coupler teflon column coupler ss
Description Tubing O.D. Tubing I.D. Max. Operating
Material Connection
Qty. Part Number
Pre-Column Coupler UP 1/16inch 0.18mm 14.7MPa PCTFE, PTFE UP Type 1pc 6010-49200
Pre-Column Coupler UP 1/16inch 0.25mm 14.7MPa PCTFE, PTFE UP Type 1pc 6010-49201
Pre-Column Coupler UP 1/16inch 0.50mm 14.7MPa PCTFE, PTFE UP Type 1pc 6010-49202
Pre-Column Coupler W 1/16inch 0.25mm 14.7MPa PCTFE Waters Type 1pc 6010-49251
Pre-Column Coupler W 1/16inch 0.50mm 14.7MPa PCTFE Waters Type 1pc 6010-49211
Pre-Column Coupler SUS 1/16inch 0.1mm 80MPa Stainless Steel Ferrule not fixed 1pc 6010-49210
Pre-Column Coupler SUS 1/16inch 0.25mm 80MPa Stainless Steel Ferrule not fixed 1pc 6010-49250

guard column information