USHA C4 HPLC guard columns used in hplc scientific instruments

Short Description:

Guard Column is installed in the HPLC column before the sampler, and its packing properties should be the same or similar to the analysis; only the particle diameter should be larger, mainly to protect the HPLC column from being contaminated by the strong retention of impurities or particulate matter in the sample.

Send email to us Download as PDF

Product Detail

FAQ

Product Tags

What is a guard column?

A guard column is a protective column or cartridge installed between the injector and the analytical column. It serves to remove the impurities and suspended solids from reaching the analytical column.

Desirable features of guard columns

Guard column should have preferably the same packing as the analytical column to eliminate separation complications
Internal ID of guard column should be comparable to analytical column to minimize back-pressure. Shorter guard column length is preferable but it should be long enough to prevent strongly retained compounds from reaching the main column
Frit facing the injector should be removable for cleaning by removal of about 2 mm of material and filling with fresh material

Please reach out to our support staff for questions.