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.
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.
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Avantor® Hichrom, Frits for Columns
Supplier: Avantor
Frit made of 316 grade stainless steel.
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Avantor® Hichrom, Biocompatible Precolumn Filter Assembly
Supplier: Avantor
These precolumn filter assembly are biocompatible and are used for precolumn filter assembly.
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Avantor® Hichrom, Frit Removal Tool
Supplier: Avantor
The frit removal tool is ideal for the removal of frits used in HPLC/LC columns.
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Avantor® Hichrom, Frits, Cap Style
Supplier: Avantor
These cap style frits used to preserve the packaging material within the column itself.
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PreColumn™ SS Filter for HPLC, MicroSolv
Supplier: MicroSolv Technology Corp
Protect your HPLC columns from particulates that can ruin them at ¹/₃ the cost of conventional precolumn filters.
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Precolumn Filters for Pursuit, XRs & XRs Ultra, Agilent Technologies
Supplier: AGILENT TECHNOLOGIES, INC (CSD)
MetaSaver precolumn filter, 0.5 um, 10/pk
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Filter Column, Michel-Miller, Ace Glass Incorporated
Supplier: Ace Glass
These columns are for use with the Michel-Miller liquid chromatography System as a filter to assure only clean solvent enters column.
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Replacement Frits for Empty Cartridges and Empty Cartridges with Pre-installed Frits, Agilent Technologies
Supplier: AGILENT TECHNOLOGIES, INC (CSD)
CrossLab, Frit for SPE cartridges, 15.9 mm, 12 ml
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Upchurch Scientific® Frit-In-A-Ferrule™, IDEX Health & Science
Supplier: Upchurch Scientific
Upchurch Scientific® Frit-In-A-Ferrule™ seal and filter simultaneously by incorporating a frit into the body of a flat-bottom ferrule.
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Column Filters and Frits for SPE Columns, Burdick and Jackson®
Supplier: Burdick & Jackson
Frit for 25 mL Reservoir
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Stainless Steel Frits, Upchurch Scientific®
Supplier: Upchurch Scientific
These 316 stainless steel frits are the most common size filters used throughout HPLC systems.
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Frits for Omnifit® EZ, EZ SolventPlus™, BenchMark™, HiT™, and SolventPlus™ Columns, Diba Industries
Supplier: Antyila Scientific
Select from a range of porosities for your media and chemistry.
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OPTI-SOLV® Micro Filters
Supplier: Optimize
For volume critical filtering needs, optimize offers the OPTI-SOLV micro filter.
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¹/₄" HPLC Frits, Restek
Supplier: Restek
We manufacture our frits from fine, chromatographic-grade 316 stainless steel, and we offer sizes to fit most column and pore sizes.
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PTFE Frits for Agilent HPLC Systems, Restek
Supplier: Restek
Frits are designed for use with Agilent HPLC systems.
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OPTI-SOLV® Nano Filters
Supplier: Optimize
The OPTI-SOLV nano filter cuts the internal volume down even further.
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Upchurch Scientific® Stainless Steel Frits, IDEX Health & Science
Supplier: Upchurch Scientific
Upchurch Scientific® stainless steel frits are available in several porosities: 0.5, 2, 10, and 20 µm.
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Upchurch Scientific® Precolumn Filters, IDEX Health & Science
Supplier: Upchurch Scientific
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.
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EXP® Pre-Column Filters
Supplier: Optimize
The EXP® Pre-Column Filter is ideal for protecting small-particle UHPLC columns at extreme pressures.
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Precolumn and Inline MicroFilters, Upchurch Scientific®
Supplier: Upchurch Scientific
Precolumn MicroFilters, PEEK frit contains total void volume of 0.5 µl.
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UltraShield UHPLC PreColumn Filter, Restek
Supplier: Restek
Cost effective pre-column filters to protect UHPLC systems.
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Upchurch Scientific® PEEK™ Frits, IDEX Health & Science
Supplier: Upchurch Scientific
Upchurch Scientific® PEEK™ frits are suitable for low- and high-pressure applications and offer exceptional uniform porosity to ensure longer filtration life and consistent frit-to-frit swept volumes.
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OPTI-SOLV® Mini Filters
Supplier: Optimize
The OPTI-SOLV® Mini Filter provides low-impact filtration in a package no larger than a finger-tight fitting.