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, Frits, Cap Style
Supplier: Avantor
These cap style frits used to preserve the packaging material within the column itself.
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Avantor® ACE®, HPLC Precolumn Filters
Supplier: Avantor
These precolumn filters with PEEK body and stainless steel frit provide protection for analytical and microbore columns. They connect directly to the column without the need for an additional holder.
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J.T.Baker® BAKERBOND®, Frits for Glass Columns
Supplier: Avantor
J.T.Baker® BAKERBOND®, PTFE frits for 3 ml glass columns
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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® ACE®, UHPLC Pre-Column Filters
Supplier: Avantor
Avantor® ACE® UHPLC pre-column filters made from stainless steel/PEEK provide protection for all UHPLC columns. They offer ultra-low dispersion for maximum compatibility with UHPLC instruments and columns. For use with Waters 'Classic' Acquity® systems, an alternative Waters Acquity® compatible version provides improved performance.
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VWR® 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, Column Frits
Supplier: Avantor
Frit made of 316 grade stainless steel.
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Precolumn filters, ColumnSaver
Supplier: Merck
Precolumn filter kit has a standard 10-32 fitting and fits direct to most column types without introducing an additional dead volume.
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J.T.Baker® BAKERBOND spe™, Frits for Filtration Columns
Supplier: Avantor
J.T.Baker® BAKERBOND spe™, Frits for 3 ml polypropylene columns
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Gas distributors and frits for scrubber bottles and columns, BOLA
Supplier: Bohlender
These PTFE gas distributors and frits are suitable for steady sparkling of the flowing gas.
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Flash chromatography cartridges, filter elements, CHROMABOND® Flash DL
Supplier: MACHEREY-NAGEL
CHROMABOND®, CHROMABOND® Flash DL 4, PE filter elements, 12,4 mm ID
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HPLC precolumn filters
Supplier: MICROSOLV
The flter protects columns from particulates and extends the column life-time.
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PP frits for SPE cartridges
Supplier: VARIAN
PP frit, are made with high-grade, clean PE for clean extracts.
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Head space frits for SINGLE StEP flash chromatography columns
Supplier: THOMSON INSTRUMENT
Used in conjunction with SINGLE StEP columns with dry sample loading to compact the sample and help prevent channeling.
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Biocompatible precolumn filters, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Precolumn filters, PEEK bodies and PCTFE-surrounded PEEK frits.
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UHPLC precolumn filters, UltraShield
Supplier: Restek
Titanium filter in a stainless steel body with PEEK ferrule. Its design easily fits with all columns.
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Precolumn filters, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
These filters are ideal for higher pressure applications and to help prevent particulate contamination.
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Frits, stainless steel, Unidense type
Supplier: VICI JOUR RESEARCH
Frits made of stainless steel with extra-low carbon content.
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UHPLC filter
Supplier: Thermo Fisher Scientific
Column protection for Hypersil GOLD™ 1,9 µm and Syncronis™ 1,7 µm columns without compromising performance.
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Precolumn MicroFilters, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Precolumn MicroFilters are specifically designed to directly connect into microbore or analytical columns.
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HPLC column filters, direct-connection, Javelin™
Supplier: Thermo Fisher Scientific
Protect HPLC systems with one-piece Javelin™ direct-connection column filters.
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PEEK-encased frits
Supplier: VICI JOUR RESEARCH
Made of stainless steel or titanium. Titanium frits are resistant to corrosion, biocompatible and recommended for protein analysis.
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Inlet liner packing, CarboFrit™
Supplier: Restek
CarboFrit™ plugs are specifically designed to be slightly larger in OD than the 4 mm ID of glass liners. This allows the plug to conform to the ID of the glass liner, preventing voids in the packing.
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Frits, titanium, Unidense type
Supplier: VICI JOUR RESEARCH
Titanium frits are preferred over stainless steel frits for the application related to the analysis of sensitive substances such as biomolecules.
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Filters, Frit-In-A-Ferrule™, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
These filters are designed to seal and filter simultaneously by incorporating a frit into the body of a flat-bottom ferrule.
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HPLC frits
Supplier: Restek
These 6 mm frits are manufactured from fine, chromatographic grade 316 stainless steel and different sizes are available to fit most column and pore sizes. Compatible frit have to be chosen by checking its pore size with particle size of the packaging in the column.
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Stainless steel semi-prep frits, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Upchurch Scientific®, A-107 semi-prep frit, Porosity: 10,0 µm, Thickness: 1,6 mm, Frit Ø ext.: 4, 8 mm, Frit volume: 9,1 µl, Frit material: Stainless steel, Ring ext. Ø: 6,5 mm, Ring material: PCTFE
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: EPPENDORF
: Integra
: OZ BIOSCIENCES
: VWR Collection
: SenseAnywhere
: Integra
: NANOENTEK
: VWR Collection
: Integra
: Sartorius
: Quantabio