Liquid Process Filters

Liquid process filters are used to separate particles and fluid in a suspension. When selecting a filter, it is important to select the proper filter type to ensure the filter meets the needs and requirements of the system. Filters can come in three basic varieties, namely cartridge filters, clean-in-place filters, and bag filters. Large surface areas in some models prevent pump cavitation, while stainless steel and polymer versions offer chemical compatibility.

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Avantor® Hichrom, Inlet Solvent Filters

Supplier: Avantor

These solvent inlet filters are used at the low pressure inlet side of the pump to help protect check valves, injector and column from particulate contamination from the eluent.

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Suction filter, b.safe

Supplier: Bohlender

Filter candle made of porous PE.

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Avantor® Hichrom Bottom-of-the-Bottle™, Inlet Solvent Filters

Supplier: Avantor

These filters are made from 100% PEEK.

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VWR® Hichrom Last Drop™ Inlet Filters

Supplier: Avantor

The Last Drop™ eluent filter utilises a flat element, which sits parallel to the bottom of the reservoir, allowing the filter to draw all but the last 2% of the eluent without drawing air into the system. The filter consists of a 316 stainless steel or PTFE filter element in an inert housing.

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Solvent Filter/HPLC

Supplier: ROBU GLASFILTER

ROBU® VitraPOR® solvent filter for HPLC provides precise and reliable filtration of solvents, ensuring optimal performance in high-performance liquid chromatography systems.

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Suction filters, BOLA

Supplier: Bohlender

These PTFE suction filters consist of a receiver with a female thread and an easily exchangeable frit. They are ideal prefilters in front of pump systems for protecting gaskets, pistons or column packings against premature wearing due to contaminations.

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Degassing Filters

Supplier: ROBU GLASFILTER

ROBU® degassing filter with integrated VitraPOR® filter ensures efficient solvent degassing with inert gases, combined with reliable filtration. Ideal for chromatography and analytical applications, it offers high chemical and thermal resistance.

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Suction filters with PTFE membrane, b.safe

Supplier: Bohlender

Suction Filter with PTFE membrane.

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Inlet filter, Rheodyne®

Supplier: IDEX RHEODYNE

Inlet filters are used to extract particles from the sample between the injector and the column.

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Filter for ultrapure water system, arium® CellPlus

Supplier: Sartorius

The arium® CellPlus is a sterile packed, point-of-use ultrafilter for efficient removal of endotoxins, RNase, DNase, microorganisms and particles. Retrograde contamination is prevented by the protective bell design made up of polycarbonate. It offers high safety for critical cell culture applications.

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Mobile Phase Filters

Supplier: MICROSOLV

Biocompatible, last drop, PEEK and polypropylene mobile phase filters. PTFE filter element and will provide very high filter capacity and throughput while using a maximum amount of solvent. The unique design allows for this flat filter to vacuum up to the last drop of liquid in the reservoir bottle.

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Solvent spargers

Supplier: PerkinElmer

Solvent reservoir sparger, Titanium, Pore size: 10 µm

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Low pressure slip-on inlet filter

Supplier: Restek

This slip-on inlet filter is made of 316 stainless steel tip with a tefzel collar seals to a corrosion-resistant 316 stainless steel filter element.

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Inlet filters, low-pressure CPI, for HPLC system

Supplier: Restek

A 316 stainless steel knurled cap and Tefzel CPI ferrule seal to ¹/₈" Ext.Ø PTFE tubing when finger tightened onto the precision-machined filter holder.

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Solvent filter, bluestem glass

Supplier: Restek

This solvent filter is made up of borosilicate glass and is used to prevent the particulates and microbial growth in the solvents from entering the system.