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Catalog No. Product Net Price
MK4303 Centriprep Centrifugal Filter Unit Special offer 
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  • Background Information
  • Centriprep® centrifugal filters are disposable ultrafiltration devices used for purifying, concentrating, and desalting biological samples in the 2–15 mL volume range. These complete, ready-to-use ultrafiltration devices are designed for operation in most centrifuges that can accommodate 50 mL centrifuge tubes. They are easy to use and offer a high flow rate. Centriprep® devices consist of a sample container with a twist-lock cap, a filtrate collector containing a low-adsorptive, Ultracel® regenerated cellulose membrane and an air-seal cap for sample isolation.Features & Benefits:•For use with samples containing high levels of solutes •Unique inverse flow mode of operation with large deadstop •Fast sample processing •Available with Ultracel® membranes: (3, 10, 30 and 50 kDa NMWL) •Fits standard swinging-bucket rotor for 50 mL tubes Applications:Concentration and Purification of Particle-laden Solutions, Solutions with High Solute Concentration, Separation of Low MW Solutes from Fermentation Broths, Cell Culture Media and Lysates
  • Catalogue Number
  • 4303
  • Centrifugal Application
  • High Solute sample concentration, desalting and purification
  • Chemistry
  • Regenerated Cellulose (RC)
  • Color Code
  • Yellow
  • Device Material
  • Sample reservoir and filtrate collector: PolycarbonateCap: Nylon
  • Diameter
  • 2.81 cm
  • Filter Code
  • YM-3
  • Filter Type
  • Ultrafiltration
  • Filtration Area
  • 2.84 cm²
  • Hold-up Volume
  • 0.5 mL
  • Key Applications
  • Protein ExtractionProtein PurificationSample Prep
  • Length
  • 135 cm
  • Material Size
  • 96
  • Minimum Final Concentrate Volume
  • 700 µL
  • NMWL
  • 3 KDa
  • Seal Material
  • Polypropylene (PP)
  • Sterility
  • Non-Sterile
  • Trade Name
  • Centriprep
  • Volume
  • Key Applications
PLBC15005 Ultrafiltration Discs, 3 kDa NMW 202 
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  • Background Information
  • Assemble your Amicon Stirred Cell with the membrane of your choice. Ultrafiltration cut disc membranes are available in Ultracel® regenerated cellulose and Biomax® polyethersulvone (PES). The membranes are available in a range of different pore sizes & diameters.Ultracel regenerated cellulose membranes are recommended for concentrating or desalting dilute solutions. The hydrophilic, tight microstructure of Ultracel membranes assures the highest possible retention with the lowest possible adsorption of protein, DNA or other macromolecules.Biomax PES membranes are recommended for concentrating or desalting higher volumes of more concentrated samples such as serum, plasma, or conditioned tissue culture media.Microfiltration Durapore® PVDF cut discs are available 0.1 µm, 0.22 µm, and 0.45 µm pore sizes in both 63.5 mm and 75 mm diameters.Features & Benefits:•Disc diameters include: 25, 44.5, 47, 63.5, 76, 90 and 150 mm •Both Ultracel®, Durapore®, and Biomax® membranes are available in a wide range of pore sizes to meet your separation requirements •Compatible with Amicon® Stirred Cells Applications:Concentration, Buffer Exchange, Desalting
  • Catalogue Number
  • PLBC15005
  • Chemistry
  • Regenerated Cellulose (RC)
  • Device Configuration
  • Ultrafiltration Discs
  • Diameter
  • Key Applications
  • Filter Code
  • PLBC
  • Filter Diameter (⌀)
  • 150 mm
  • Filter Type
  • Ultrafiltration
  • Filtration Area
  • 177 cm²
  • Key Applications
  • Protein PurificationProtein ConcentrationProtein Desalting
  • Material Size
  • 5
  • Media
  • Ultracel®
  • NMWL
  • 3 kDa
  • Trade Name
  • Ultracel
PLBC02510 Ultrafiltration Discs, 3 kDa NMW 92 
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  • Background Information
  • Assemble your Amicon Stirred Cell with the membrane of your choice. Ultrafiltration cut disc membranes are available in Ultracel® regenerated cellulose and Biomax® polyethersulvone (PES). The membranes are available in a range of different pore sizes & diameters.Ultracel regenerated cellulose membranes are recommended for concentrating or desalting dilute solutions. The hydrophilic, tight microstructure of Ultracel membranes assures the highest possible retention with the lowest possible adsorption of protein, DNA or other macromolecules.Biomax PES membranes are recommended for concentrating or desalting higher volumes of more concentrated samples such as serum, plasma, or conditioned tissue culture media.Microfiltration Durapore® PVDF cut discs are available 0.1 µm, 0.22 µm, and 0.45 µm pore sizes in both 63.5 mm and 75 mm diameters.Features & Benefits:•Disc diameters include: 25, 44.5, 47, 63.5, 76, 90 and 150 mm •Both Ultracel®, Durapore®, and Biomax® membranes are available in a wide range of pore sizes to meet your separation requirements •Compatible with Amicon® Stirred Cells Applications:Concentration, Buffer Exchange, Desalting
  • Catalogue Number
  • PLBC02510
  • Chemistry
  • Regenerated Cellulose (RC)
  • Device Configuration
  • Ultrafiltration Discs
  • Diameter
  • Key Applications
  • Filter Code
  • PLBC
  • Filter Diameter (⌀)
  • 25 mm
  • Filter Type
  • Ultrafiltration
  • Filtration Area
  • 4.1 cm²
  • Key Applications
  • Protein PurificationProtein ConcentrationProtein Desalting
  • Material Size
  • 10
  • Media
  • Ultracel®
  • NMWL
  • 3 kDa
  • Trade Name
  • Ultracel
PLBC04310 Ultrafiltration Discs, 3 kDa NMW 151 
Add to Cart
  • Background Information
  • Assemble your Amicon Stirred Cell with the membrane of your choice. Ultrafiltration cut disc membranes are available in Ultracel® regenerated cellulose and Biomax® polyethersulvone (PES). The membranes are available in a range of different pore sizes & diameters.Ultracel regenerated cellulose membranes are recommended for concentrating or desalting dilute solutions. The hydrophilic, tight microstructure of Ultracel membranes assures the highest possible retention with the lowest possible adsorption of protein, DNA or other macromolecules.Biomax PES membranes are recommended for concentrating or desalting higher volumes of more concentrated samples such as serum, plasma, or conditioned tissue culture media.Microfiltration Durapore® PVDF cut discs are available 0.1 µm, 0.22 µm, and 0.45 µm pore sizes in both 63.5 mm and 75 mm diameters.Features & Benefits:•Disc diameters include: 25, 44.5, 47, 63.5, 76, 90 and 150 mm •Both Ultracel®, Durapore®, and Biomax® membranes are available in a wide range of pore sizes to meet your separation requirements •Compatible with Amicon® Stirred Cells Applications:Concentration, Buffer Exchange, Desalting
  • Catalogue Number
  • PLBC04310
  • Chemistry
  • Regenerated Cellulose (RC)
  • Device Configuration
  • Ultrafiltration Discs
  • Diameter
  • Key Applications
  • Filter Code
  • PLBC
  • Filter Diameter (⌀)
  • 44.5 mm
  • Filter Type
  • Ultrafiltration
  • Filtration Area
  • 13.4 cm²
  • Key Applications
  • Protein PurificationProtein ConcentrationProtein Desalting
  • Material Size
  • 10
  • Media
  • Ultracel®
  • NMWL
  • 3 kDa
  • Trade Name
  • Ultracel
PLBC04710 Ultrafiltration Discs, 3 kDa NMW 173 
Add to Cart
  • Background Information
  • Assemble your Amicon Stirred Cell with the membrane of your choice. Ultrafiltration cut disc membranes are available in Ultracel® regenerated cellulose and Biomax® polyethersulvone (PES). The membranes are available in a range of different pore sizes & diameters.Ultracel regenerated cellulose membranes are recommended for concentrating or desalting dilute solutions. The hydrophilic, tight microstructure of Ultracel membranes assures the highest possible retention with the lowest possible adsorption of protein, DNA or other macromolecules.Biomax PES membranes are recommended for concentrating or desalting higher volumes of more concentrated samples such as serum, plasma, or conditioned tissue culture media.Microfiltration Durapore® PVDF cut discs are available 0.1 µm, 0.22 µm, and 0.45 µm pore sizes in both 63.5 mm and 75 mm diameters.Features & Benefits:•Disc diameters include: 25, 44.5, 47, 63.5, 76, 90 and 150 mm •Both Ultracel®, Durapore®, and Biomax® membranes are available in a wide range of pore sizes to meet your separation requirements •Compatible with Amicon® Stirred Cells Applications:Concentration, Buffer Exchange, Desalting
  • Catalogue Number
  • PLBC04710
  • Chemistry
  • Regenerated Cellulose (RC)
  • Device Configuration
  • Ultrafiltration Discs
  • Diameter
  • Key Applications
  • Filter Code
  • PLBC
  • Filter Diameter (⌀)
  • 47 mm
  • Filter Type
  • Ultrafiltration
  • Filtration Area
  • 17.3 cm²
  • Key Applications
  • Protein PurificationProtein ConcentrationProtein Desalting
  • Material Size
  • 10
  • Media
  • Ultracel®
  • NMWL
  • 3 kDa
  • Trade Name
  • Ultracel
PLBC06210 Ultrafiltration Discs, 3 kDa NMW 179 
Add to Cart
  • Background Information
  • Assemble your Amicon Stirred Cell with the membrane of your choice. Ultrafiltration cut disc membranes are available in Ultracel® regenerated cellulose and Biomax® polyethersulvone (PES). The membranes are available in a range of different pore sizes & diameters.Ultracel regenerated cellulose membranes are recommended for concentrating or desalting dilute solutions. The hydrophilic, tight microstructure of Ultracel membranes assures the highest possible retention with the lowest possible adsorption of protein, DNA or other macromolecules.Biomax PES membranes are recommended for concentrating or desalting higher volumes of more concentrated samples such as serum, plasma, or conditioned tissue culture media.Microfiltration Durapore® PVDF cut discs are available 0.1 µm, 0.22 µm, and 0.45 µm pore sizes in both 63.5 mm and 75 mm diameters.Features & Benefits:•Disc diameters include: 25, 44.5, 47, 63.5, 76, 90 and 150 mm •Both Ultracel®, Durapore®, and Biomax® membranes are available in a wide range of pore sizes to meet your separation requirements •Compatible with Amicon® Stirred Cells Applications:Concentration, Buffer Exchange, Desalting
  • Catalogue Number
  • PLBC06210
  • Chemistry
  • Regenerated Cellulose (RC)
  • Device Configuration
  • Ultrafiltration Discs
  • Diameter
  • Key Applications
  • Filter Code
  • PLBC
  • Filter Diameter (⌀)
  • 63.5 mm
  • Filter Type
  • Ultrafiltration
  • Filtration Area
  • 28.7 cm²
  • Key Applications
  • Protein PurificationProtein ConcentrationProtein Desalting
  • Material Size
  • 10
  • Media
  • Ultracel®
  • NMWL
  • 3 kDa
  • Trade Name
  • Ultracel
PLBC07610 Ultrafiltration Discs, 3 kDa NMW 202 
Add to Cart
  • Background Information
  • Assemble your Amicon Stirred Cell with the membrane of your choice. Ultrafiltration cut disc membranes are available in Ultracel® regenerated cellulose and Biomax® polyethersulvone (PES). The membranes are available in a range of different pore sizes & diameters.Ultracel regenerated cellulose membranes are recommended for concentrating or desalting dilute solutions. The hydrophilic, tight microstructure of Ultracel membranes assures the highest possible retention with the lowest possible adsorption of protein, DNA or other macromolecules.Biomax PES membranes are recommended for concentrating or desalting higher volumes of more concentrated samples such as serum, plasma, or conditioned tissue culture media.Microfiltration Durapore® PVDF cut discs are available 0.1 µm, 0.22 µm, and 0.45 µm pore sizes in both 63.5 mm and 75 mm diameters.Features & Benefits:•Disc diameters include: 25, 44.5, 47, 63.5, 76, 90 and 150 mm •Both Ultracel®, Durapore®, and Biomax® membranes are available in a wide range of pore sizes to meet your separation requirements •Compatible with Amicon® Stirred Cells Applications:Concentration, Buffer Exchange, Desalting
  • Catalogue Number
  • PLBC07610
  • Chemistry
  • Regenerated Cellulose (RC)
  • Device Configuration
  • Ultrafiltration Discs
  • Diameter
  • Key Applications
  • Filter Code
  • PLBC
  • Filter Diameter (⌀)
  • 76 mm
  • Filter Type
  • Ultrafiltration
  • Filtration Area
  • 41.8 cm²
  • Key Applications
  • Protein PurificationProtein ConcentrationProtein Desalting
  • Material Size
  • 10
  • Media
  • Ultracel®
  • NMWL
  • 3 kDa
  • Trade Name
  • Ultracel
PLBC09005 Ultrafiltration Discs, 3 kDa NMW 156 
Add to Cart
  • Background Information
  • Assemble your Amicon Stirred Cell with the membrane of your choice. Ultrafiltration cut disc membranes are available in Ultracel® regenerated cellulose and Biomax® polyethersulvone (PES). The membranes are available in a range of different pore sizes & diameters.Ultracel regenerated cellulose membranes are recommended for concentrating or desalting dilute solutions. The hydrophilic, tight microstructure of Ultracel membranes assures the highest possible retention with the lowest possible adsorption of protein, DNA or other macromolecules.Biomax PES membranes are recommended for concentrating or desalting higher volumes of more concentrated samples such as serum, plasma, or conditioned tissue culture media.Microfiltration Durapore® PVDF cut discs are available 0.1 µm, 0.22 µm, and 0.45 µm pore sizes in both 63.5 mm and 75 mm diameters.Features & Benefits:•Disc diameters include: 25, 44.5, 47, 63.5, 76, 90 and 150 mm •Both Ultracel®, Durapore®, and Biomax® membranes are available in a wide range of pore sizes to meet your separation requirements •Compatible with Amicon® Stirred Cells Applications:Concentration, Buffer Exchange, Desalting
  • Catalogue Number
  • PLBC09005
  • Chemistry
  • Regenerated Cellulose (RC)
  • Device Configuration
  • Ultrafiltration Discs
  • Diameter
  • Key Applications
  • Filter Code
  • PLBC
  • Filter Diameter (⌀)
  • 90 mm
  • Filter Type
  • Ultrafiltration
  • Filtration Area
  • 63 cm²
  • Key Applications
  • Protein PurificationProtein ConcentrationProtein Desalting
  • Material Size
  • 5
  • Media
  • Ultracel®
  • NMWL
  • 3 kDa
  • Trade Name
  • Ultracel
TSTP01300 Isopore Membrane Filter 62 
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  • Air Flow Rate
  • 0.868 L/min x cm²/psi
  • Background Information
  • The Isopore™ membrane is a polycarbonate, track-etched screen filter recommended for all analyses in which the sample is viewed on the surface of the membrane. Isopore™ membrane offers distinct advantages for the analysis of airborne contaminants and other particles using optical or electron microscopy. The Isopore™ membrane is composed of polycarbonate film, which has a smooth, glass-like surface for clearer sample observation. The unique manufacturing process of the membrane ensures a precise pore diameter and a consistent pore size for accurate separation of samples by size. Matched-weight filters are not usually required because of low, constant tar and ash weights.Features & Benefits:•Membrane structure retains particles on the surface, simplifying counting and analysis •Isopore™ membranes do not stain, resulting in low background interference •Non-hygroscopic, allowing for rapid drying and reduced sample analysis time •Translucent material does not require clearing for transmitted light microscopy; also available in brown variety Applications:Air Monitoring, Epifluorescent Microscopy, Chemotaxis Assays
  • Catalogue Number
  • TSTP01300
  • Chemistry
  • Polycarbonate (PC)
  • Diameter
  • Biological Information Media
  • Filter Code
  • TSTP
  • Filter Color
  • White
  • Filter Diameter (⌀)
  • 13 mm
  • Filter Surface
  • Plain
  • Filter Type
  • Screen filter
  • Flow Rate
  • 0.868 L/min x cm²/psi
  • Gravimetric Extractables
  • < 1%
  • Material Size
  • polycarbonate, Hydrophilic, 3.0 µm, 13 mm, white, plain, 100
  • Maximum Operating Temperature
  • 140 °C (possible reduction in flow rates may occur after autoclaving)
  • Media
  • Isopore®
  • Pore Size
  • 3.0 µm
  • Porosity %
  • 11.3%
  • Thickness
  • 22 µm
  • Trade Name
  • Isopore
  • Wettability
  • Hydrophilic
TSTP01300 Isopore Membrane Filter 62 
Add to Cart
  • Air Flow Rate
  • 0.868 L/min x cm²/psi
  • Background Information
  • The Isopore™ membrane is a polycarbonate, track-etched screen filter recommended for all analyses in which the sample is viewed on the surface of the membrane. Isopore™ membrane offers distinct advantages for the analysis of airborne contaminants and other particles using optical or electron microscopy. The Isopore™ membrane is composed of polycarbonate film, which has a smooth, glass-like surface for clearer sample observation. The unique manufacturing process of the membrane ensures a precise pore diameter and a consistent pore size for accurate separation of samples by size. Matched-weight filters are not usually required because of low, constant tar and ash weights.Features & Benefits:•Membrane structure retains particles on the surface, simplifying counting and analysis •Isopore™ membranes do not stain, resulting in low background interference •Non-hygroscopic, allowing for rapid drying and reduced sample analysis time •Translucent material does not require clearing for transmitted light microscopy; also available in brown variety Applications:Air Monitoring, Epifluorescent Microscopy, Chemotaxis Assays
  • Catalogue Number
  • TSTP01300
  • Chemistry
  • Polycarbonate (PC)
  • Diameter
  • Biological Information Media
  • Filter Code
  • TSTP
  • Filter Color
  • White
  • Filter Diameter (⌀)
  • 13 mm
  • Filter Surface
  • Plain
  • Filter Type
  • Screen filter
  • Flow Rate
  • 0.868 L/min x cm²/psi
  • Gravimetric Extractables
  • < 1%
  • Material Size
  • polycarbonate, Hydrophilic, 3.0 µm, 13 mm, white, plain, 100
  • Maximum Operating Temperature
  • 140 °C (possible reduction in flow rates may occur after autoclaving)
  • Media
  • Isopore®
  • Pore Size
  • 3.0 µm
  • Porosity %
  • 11.3%
  • Thickness
  • 22 µm
  • Trade Name
  • Isopore
  • Wettability
  • Hydrophilic

Overview

Analytical Sample Preparation Membrane Filtration Devices


Trust Merck membrane filtration devices for the collection and preparation of samples, mobile phases, and buffers to obtain the highest quality results from downstream analysis.


Whether you need to collect, separate, or remove contaminants from air or fluid samples prior to downstream analysis, our broad selection of syringe filters, membranes, filter holders and related filtration devices ensures that we have the right solution for your application.


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