Cogent Column Filters
Column Filters | Protect Your Columns | 2um or 0.5um
Our Technical Team strongly recommends that you filter every
sample before you inject them into your column with a syringe filter. However,
even with pre-filtering, your samples could agglomerate or precipitate in the
vial or pick up particles from your injector. Also, common shredding of pump
seals can find its way into column frits and that can ruin your column.
An essential and most economical way to protect your columns and guard
columns is to use a disposable, Cogent Column Filter.
These low-cost pre-column filters are finger tight fittings with an installed SS frit that are easily hand tightened into the inlet nut of the HPLC column or guard column. The stainless steel frit inside this filter is available in 0.5um or 2um pore sizes. When you see back pressure rising, it’s time to replace the Cogent Column Filter with its trapped particles. One Filter is included with each Cogent Column purchase. Replacements are sold separately.
