The Heart of Science

Merck's purpose is to solve the toughest problems in life science by collaborating with the global scientific community. Through this, Merck aims to accelerate access to better health for people everywhere. Merck products provide scientists and engineers with best-in-class lab materials, technologies and services. Merck is dedicated to making research and biotech production simpler, faster and safer.


From Membrane to Result

Backed by decades of research, Merck's comprehensive portfolio of membranes and ready-to-use devices has helped generations of scientists reach new milestones. By understanding customer applications, Merck creates innovative membrane-based solutions adapted to your needs.

Membrane Filtration and Hardware
Millicup Flex

An exhaustive portfolio

The path to new discoveries must be laid on a solid foundation. Backed by decades of research, Merck's exhaustive portfolio of fundamental filters and supporting hardware has helped generations of scientists reach new milestones.

With the needs of today’s scientists foremost in our minds, we have continued to evolve, ensuring our products can continue to serve as the cornerstone for your latest innovation.


Merck Durapore Membrane Filters

Membrane Filtration

Millipore™ membranes have supported laboratory filtration in the academic, pharmaceutical, and industrial sectors since the 1950s. We provide a range of membrane chemistries including MF-Millipore™ mixed cellulose esters, Durapore™ PVDF and Millipore Express™ PLUS polyethersulfone, as well as hydrophilic and hydrophobic PTFE.
View some of Merck's most popular membrane filtration products:

Hardware and Accessories

Hardware and Accessories

Filter housings are used in conjunction with cut disc membrane filters to provide structural support and create a seal around the membrane to prevent filtrate contamination. Reusable syringe filter holders are suited for filtering or clearing small amounts of liquid where a replaceable or removable filter is desired. Filter holders for vacuum and pressure filtration are available in a variety of formats and sizes. View some of Merck's most popular filtration hardware and accessory items:


Multiwell Plates for Filtration & Assays
Multiwell Plates




Multiply your success with MultiScreen™ and Millicell™ plates

Multiwell plates enable simple, rapid, automation-compatible preparation and analysis of multiple samples to fulfill the requirements of life science, environmental, analytical, clinical, forensic, diagnostic and industrial workflows.

MultiScreen™ plates meet specific performance criteria for sample preparation and assay methodology requiring low non-specific binding of protein and drug analytes, solvent compatibility, and sample throughput. MultiScreen™ plates are used to prepare and collect samples for analysis and miniaturize assays in 96- or 384-well formats, while Millicell™ products offer the versatility of 6, 12, 24, or 96 wells for cell culture applications.




MultiScreen™ filter plates are designed to work productively with sensitive detection and imaging systems, providing dependable and robust sample handling and precision transfer.

MultiScreen™ filtration plates are offered in a broad selection of membrane filters with both sterile and
non-sterile options.


Merck Millipore MultiScreen™ 96-Well Assay Plates for ELISPOT Assays



Millicell™ cell culture inserts, plates, and cultureware are designed to maximize user convenience and biological relevance in cell culture applications.

Millicell™ permeable inserts encourage the natural morphology and proliferation of adherent and suspension cell lines.



Find out about and shop for Merck Millipore MultiScreen™ Solvinert Filter Plates and HTS Manifold Standard Collar Kits.




Non Sterile Millex Syringe Filters



Clean data starts with clean samples

Protect your results with Millex™ syringe filters. We offer a broad range of membranes, pore sizes,and filter diameters to meet your needs. Whether you are performing HPLC, LC-MS, ion chromatography, dissolution testing, or protein analysis, Millex™ syringe filters support high sample recoveries while providing consistent, reliable filtration.

With over 50 years of expertise, weare constantly innovating new filtration tools to offer rapid and efficient solutions tailored for you. Use our selector to find the ideal syringe filter for your sample.


Millex Filters


Samplicity™-System: Efficient filtration of hard-to-filter samples

Compared to syringe filtration of viscous or particulate-laden samples, which required excessive manual force and greater filtration time per sample, the Samplicity™ filtration system filtered even highly viscous samples in seconds, with minimal manual force.

Sterile Filtration



Sterile Filtration

Prepare cell culture media with our sterile filters. With industry leading innovative designs for filtration devices and 60 years of membrane technology expertise, we offer a wide range of solutions to make the repetitive and critical tasks accurate, quick and easy.



Syringe Filters

Millex™ syringe filters provide convenient sterilization of small volumes and are ideal for solutions such as antibiotics and tissue culture additives. Their unsurpassed quality and consistency of results has led to the development of many sample preparation methods that specify Millex™ filters.



Merck Millex™-GP Sterile Syringe Filter Units with PES Membrane, 0.22 μm (Research Use Only)


Bottle-Top Filters

Stericup™ and Steritop™ sterile filtration devices combine superior flow rates and throughput with low non-specific binding and a stable, no-tip design. Membranes with low protein binding ensure that key growth factors and proteins won’t be absorbed into the filter.



Merck provides many further sterile filtration devices to improve on your samle filtration needs. These items include Merck's Steriflip™, Sterivex™, Steripak™, and Stericap™ products. Find a small selection of these convenient and reliable devices below:


Stericup™ E and Steritop™ E

The new ‘E’ (eco-friendly) additions to the Stericup™ family eliminate the plastic filler funnel entirely by threading directly onto the media bottle. Stericup™ E and Steritop™ E filter devices reduce environmental impact by cutting down on disposable plastic, hazardous waste and lab storage space requirements.

Cell Culture Products

Cell Culture

Cell culture is fundamental in life science research and development. Whether your goal is to establish relevant cell models to probe complex biology, establish drug discovery and drug development assays, or produce recombinant proteins or therapeutics, we have everything you need to advance your science.

Our cell culture workflow portfolio, advanced cell culture solutions, cell counting and imagingequipment, cultureware, extracellular matrices, hydrogels, sterile filtration consumables, reagents, media, sera, and growth factors offerquality essentials for 2D and 3D cell culture experiments.


Merck Millipore Millicell™ Culture Plate

Merck Millipore Millicell™ Culture Plate Inserts: PCF

Designed for improved cell differentiation and expanded applications involving
analytical cell biology.

Merck Millipore Millicell™ EZ Slides

Merck Millipore Millicell™ EZ Slides

Simplify your cell analysis by using the Millicell EZ SLIDE glass slide to culture, fix, stain and view your sample all in one device.


Protein Preparation and Analysis

Extraction, Isolation, Purification, Separation, Detection

Our membrane engineers have developed devices expressly for desalting, concentrating, and buffer exchange that saves your proteins and save you time and protocol steps. A comprehensive offering of protein preparation products provides gentle extraction, high-yield isolation and purification, application-verified detection tools for techniques like electrophoresis as well as Western blot, ELISA, multiplex and mass spectrometry.


UF Protein Concentration

UF Protein Concentration

Concentrate your protein, don’t lose it. Recover protein reliably when you concentrate with Amicon™ Ultra filters. We’ve engineered Amicon™ Ultra filters with low-binding Ultracel™ regenerated cellulose membranes to ensure more precise molecular weight cut-offs.

Rethink Western Blotting

Rethink Western Blotting

Achieve better reproducibility, signal-to-noise ratio, & robustness. Brows some of Merck's western blotting products to improve your outcomes with optimized tools for your Western blots. Explore our products designed to improve key steps of the western blotting workflow.

Filter - Membrane

Filter - Membrane

Downstream analyses require that proteins, nucleic acids, virus particles, and other biomolecules are solubilized in their native form at an appropriate concentration. Ultrafiltration methods can be used to gently and efficiently concentrate biological or environmental samples by removing excess liquid or buffer. A variety of ultrafiltration devices are available to rapidly concentrate proteins and other biomolecules with high recovery.



Choosing the right Ultrafiltration Membrane makes a difference. See a comparison study of retention efficiency for different Membrane types.

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