You searched for: Precolumn Filters and Frits

Precolumn filters are essential for protecting HPLC columns against particulate matter which can accumulate on the column frit, leading to split peaks and high backpressure. Sources of particles include mobile phases (especially when buffers are mixed with organic solvents), leaking pump and injector seals, and samples. Precolumn filters are also useful because changing the column frit is extremely difficult to do without disturbing the column packing, whereas changing the precolumn filter’s frit is easy, providing relatively inexpensive insurance against column damage.

Sort By

Avantor® Hichrom, Frits for Columns

Supplier: Avantor

Frit made of 316 grade stainless steel.

Expand 1 Items

Avantor® Hichrom, Precolumn Filters

Supplier: Avantor

Placed immediately before the column, the precolumn filter traps particles introduced with the sample. For samples, which may irreversibly absorb onto the column, the use of guard cartridges is strongly recommended.

Expand 2 Items

Stainless Steel Frits, Upchurch Scientific®

Supplier: IDEX HEALTH & SCIENCE LLC

These 316 stainless steel frits are the most common size filters used throughout HPLC systems.

Expand 1 Items

Upchurch Scientific® Stainless Steel Frits, IDEX Health & Science

Supplier: IDEX HEALTH & SCIENCE LLC

Upchurch Scientific® Stainless Steel frits are available in several porosities: 0.5, 2, 10, and 20 µm. Most of these frits include either a PCTFE, ETFE or PEEK polymer sealing ring and many have the common 0.250”(0.64 cm) and 0.254"(0.64 cm) OD's, which allow them to be used in Upchurch Scientific® precolumn and inline filters. Choose frits with larger diameter faces and/or larger porosities for faster flow rates. Smaller diameter faces and/or smaller porosities are ideal for applications sensitive to extra flow path volume.

Expand 1 Items

Upchurch Scientific® Precolumn Filters, IDEX Health & Science

Supplier: IDEX HEALTH & SCIENCE LLC

A precolumn filter placed between the sample injection valve and the HPLC column protects the column from particles originating in the sample and from pump and valve seal wear.