Top 10 Silica Magnetic Bead Manufacturers in France 2026

Quick Answer: Top Silica Magnetic Bead Manufacturers Serving France in 2026

The top 10 silica magnetic bead manufacturers and specialist nucleic acid purification suppliers serving France in 2026 are:

1. Cytiva

2. Thermo Fisher Scientific

3. SANYU

4. Merck MagPrep

5. Promega

6. QIAGEN

7. New England Biolabs

8. Magtivio

9. MACHEREY-NAGEL

10. chemicell

These companies supply one or more of the following:

• Standalone silica-coated magnetic beads;

• Silane or silica-like magnetic particles;

• Magnetic bead suspensions for protocol development;

• Silica-based DNA and RNA extraction kits;

• Automated nucleic acid purification systems;

• OEM or customized magnetic bead solutions.

SANYU is ranked third and is the only China-based manufacturer included in this guide.

The phrase “serving France” does not mean that all ten companies manufacture magnetic beads inside France. It means that their products are relevant to French laboratories, biotechnology companies, molecular diagnostic developers, IVD manufacturers and automated extraction system developers.

Some suppliers maintain localized French ordering channels, while others serve France through European distributors or direct international shipments.

This ranking is an editorial assessment based on publicly available product information reviewed in 2026. It is not based on audited market share, company revenue or independent head-to-head laboratory testing.

French buyers should evaluate representative particles with their actual samples, buffers, magnets, instruments and downstream assays before approving any supplier for commercial production.

What Counts as a Silica Magnetic Bead Manufacturer?

Silica magnetic beads normally contain a magnetic core and an external silica, silane or silica-like nucleic acid-binding surface.

Under suitable chemical conditions, DNA or RNA binds reversibly to the bead surface. A magnet collects the beads while proteins, salts, lipids, inhibitors and cellular debris are removed through washing.

For this guide, a qualifying manufacturer or specialist supplier must provide at least one of the following:

• Standalone silica magnetic beads;

• Silica-coated superparamagnetic particles;

• Silane-functionalized magnetic beads;

• Silica-enclosed iron oxide particles;

• A proprietary magnetic particle using silica-based nucleic acid purification chemistry;

• Complete magnetic bead extraction systems with clear silica-based binding technology;

• OEM nucleic acid extraction components.

The ranking excludes manufacturers that only supply:

• Carboxyl magnetic beads for immunoassays;

• Streptavidin magnetic beads;

• Protein A or Protein G beads;

• Cell separation beads;

• Large industrial magnetic particles;

• Nonmagnetic silica microspheres;

• General laboratory magnets without bead technology.

Raw Silica Magnetic Beads vs Complete Extraction Kits

Not all companies in this ranking sell the same type of product.

Understanding the difference between raw beads and complete extraction kits is essential when comparing suppliers.

Standalone Raw Magnetic Beads

Standalone beads allow the customer to develop proprietary:

• Lysis buffers;

• Binding buffers;

• Wash solutions;

• Elution conditions;

• Sample-specific protocols;

• Automation programs.

Raw beads are generally more suitable for:

• IVD reagent manufacturers;

• OEM extraction kit developers;

• Automated instrument companies;

• High-volume laboratories;

• Companies building proprietary extraction chemistry.

Cytiva, Thermo Fisher, SANYU, Merck, Promega, New England Biolabs and Magtivio offer particularly relevant standalone particles or separately orderable bead components.

Complete Extraction Kits

Complete kits normally include:

• Magnetic beads;

• Lysis buffer;

• Binding buffer;

• Wash buffers;

• Elution buffer;

• Proteinase K;

• Carrier RNA or other supporting reagents;

• Application-specific protocols.

These products are generally more suitable for:

• Research laboratories;

• Clinical workflow evaluation;

• Customers seeking validated sample protocols;

• Laboratories with limited formulation-development resources;

• Rapid feasibility testing.

QIAGEN, New England Biolabs, MACHEREY-NAGEL, Promega and chemicell offer broad kit-based purification workflows.

OEM and Customized Supply

OEM projects may involve:

• Customized bead concentration;

• Alternative suspension buffers;

• Bulk packaging;

• Private labeling;

• Custom protocol development;

• Reagent filling;

• Kit assembly;

• Quality agreements;

• Reserved production capacity.

French IVD manufacturers should determine early whether they need a catalog research product, a bulk raw material or a controlled OEM component.

Why Silica Magnetic Beads Matter to France’s Molecular Diagnostics Industry

Silica magnetic beads are widely used in molecular diagnostic sample preparation because they combine reversible nucleic acid adsorption with magnetically controlled separation.

Typical applications include:

• Viral RNA extraction;

• Viral DNA extraction;

• Total RNA purification;

• Genomic DNA extraction;

• Circulating cell-free DNA isolation;

• Cell-free RNA extraction;

• Bacterial and fungal DNA extraction;

• Plasmid DNA purification;

• PCR product cleanup;

• NGS library preparation;

• Sequencing reaction cleanup;

• Food and environmental testing.

Compared with centrifuge-based spin columns, magnetic particles can be transferred between plates or reagent wells without repeatedly moving liquid through a membrane.

This makes them particularly relevant to:

• 24-sample extraction instruments;

• 32-sample instruments;

• 48-sample systems;

• 96-well automation;

• High-throughput liquid handlers;

• Magnetic rod platforms;

• Cartridge-based molecular diagnostic systems.

However, the bead is only one component of the extraction process. Final yield and purity depend on the interaction between:

• Sample pretreatment;

• Lysis chemistry;

• Chaotropic salt concentration;

• Alcohol concentration;

• Bead dose;

• Mixing;

• Binding time;

• Wash composition;

• Magnet strength;

• Drying time;

• Elution conditions.

How We Selected the Top 10 Manufacturers

The companies were evaluated using the following criteria.

Silica Magnetic Bead Relevance

Priority was given to companies with clearly documented silica-coated, silica-like, silane or silica-based magnetic nucleic acid purification technology.

Standalone Bead Availability

Manufacturers offering separately orderable beads were ranked more highly than companies supplying only closed extraction kits.

Application Breadth

The assessment considered products for:

• DNA extraction;

• RNA extraction;

• Viral nucleic acids;

• Cell-free nucleic acids;

• High-molecular-weight DNA;

• PCR cleanup;

• NGS preparation;

• Plasmid purification.

Automation Compatibility

Relevant capabilities include compatibility with:

• KingFisher platforms;

• Magnetic rod systems;

• 96-well liquid handlers;

• Open automation platforms;

• Manual tube workflows;

• Proprietary extraction instruments.

Customization and OEM Support

The evaluation considered whether the supplier supports:

• Custom bead sizes;

• Concentration adjustment;

• Buffer customization;

• Bulk quantities;

• Private-label supply;

• OEM manufacturing;

• Commercial-scale production.

Quality and Documentation

Useful supplier documentation may include:

• Certificate of Analysis;

• Safety Data Sheet;

• Particle-size specification;

• Solids concentration;

• Magnetic response data;

• Nucleic acid-binding data;

• Stability information;

• Quality certificates;

• Batch traceability;

• Change-notification procedures.

Relevance to French Buyers

Additional weight was given to:

• French-language product pages;

• European manufacturing or distribution;

• France ordering channels;

• European technical support;

• EU-oriented documentation;

• Commercial IVD support.

Top 10 Silica Magnetic Bead Manufacturers at a Glance

Top 10 Silica Magnetic Bead Manufacturers in France in 2026

1. Cytiva

Cytiva is one of the strongest suppliers of standalone silica-coated superparamagnetic beads for nucleic acid isolation.

Its SeraSil-Mag product family is designed for DNA extraction, particularly for applications where the target concentration is low and high-purity recovery is required.

Cytiva describes SeraSil-Mag as silica-coated superparamagnetic particles with surface silanol groups that support nucleic acid binding. The product is available in 400 nm and 700 nm formats.

French customers can also find SeraSil-Mag product listings through localized Sigma-Aldrich channels.

Main Products

Relevant products include:

• SeraSil-Mag 400;

• SeraSil-Mag 700;

• Silica-coated superparamagnetic beads;

• Nucleic acid isolation particles;

• Custom magnetic bead conjugation and formulation services;

• Other Sera-Mag sample-preparation particles.

Best Suited For

Cytiva is particularly suitable for:

• Low-concentration DNA extraction;

• High-purity nucleic acid isolation;

• NGS sample preparation;

• Molecular diagnostic development;

• Raw bead formulation;

• Automated extraction;

• OEM bead projects.

Key Strengths

• Clearly defined silica-coated bead technology;

• Separately available raw particles;

• Two submicron size options;

• Narrow particle-size distribution;

• Strong magnetic response;

• Established molecular diagnostic support;

• Availability through European commercial channels.

What French Buyers Should Verify

Buyers should confirm:

• Whether the 400 nm or 700 nm bead is more suitable;

• Binding capacity under the intended buffer conditions;

• Available package sizes;

• Current French or EU stock;

• Commercial production quantities;

• OEM formulation options;

• Microbial and nuclease testing;

• Change-control procedures.

Cytiva ranks first because SeraSil-Mag combines directly purchasable silica-coated particles with strong technical documentation and commercial development support.

2. Thermo Fisher Scientific

Thermo Fisher Scientific supplies Dynabeads MyOne Silane and several MagMAX nucleic acid extraction systems.

Dynabeads MyOne Silane are approximately 1 µm magnetic particles with an optimized silica-like surface. Thermo Fisher describes the beads as uniform, monosized particles with high surface area and efficient nucleic acid-capture kinetics.

The beads are used in workflows for:

• Viral DNA and RNA;

• Genomic DNA;

• Cell-free DNA;

• Total RNA;

• Microbiome samples;

• FFPE DNA and RNA;

• Wastewater nucleic acids.

Thermo Fisher also provides France-localized product and molecular diagnostic development pages for Dynabeads MyOne Silane.

Main Products

Relevant products include:

• Dynabeads MyOne Silane;

• Dynabeads Silane Viral NA Kit;

• Dynabeads Silane Genomic DNA Kit;

• MagMAX Cell-Free DNA Isolation Kit;

• MagMAX FFPE DNA/RNA Ultra Kit;

• MagMAX Microbiome Ultra Kit;

• MagMAX viral and pathogen extraction systems.

Best Suited For

Thermo Fisher is particularly suitable for:

• Viral DNA and RNA extraction;

• Genomic DNA isolation;

• Cell-free DNA;

• FFPE samples;

• Microbiome research;

• Wastewater testing;

• KingFisher automation;

• Molecular diagnostic assay development.

Key Strengths

• Uniform 1 µm particles;

• Silica-like nucleic acid-binding surface;

• Separately orderable beads;

• Broad MagMAX chemistry portfolio;

• Strong KingFisher automation compatibility;

• French ordering and support channels;

• Commercial diagnostic development resources.

What French Buyers Should Verify

Buyers should determine:

• Whether standalone MyOne Silane beads or a MagMAX kit is required;

• Research-use versus commercial-use conditions;

• Required KingFisher program;

• Sample-specific protocol availability;

• Bulk bead supply;

• OEM or commercial manufacturing agreements;

• Long-term product availability.

Thermo Fisher ranks second because it combines well-characterized silica-like particles with one of the broadest automated extraction portfolios.

3. SANYU

SANYU is a specialist manufacturer of silica magnetic beads, functional microspheres and magnetic separation materials.

Through the Nanomicron Spheres platform, SANYU supplies silica-coated magnetic beads for DNA and RNA extraction, molecular diagnostics, biotechnology and automated purification.

Its silica magnetic beads use a magnetic iron oxide core and an external silica surface containing silanol groups for reversible nucleic acid binding under suitable buffer conditions.

SANYU is ranked third and is the only China-based manufacturer included in this article.

Main Products

Relevant products include:

• 200 nm silica magnetic beads;

• 500 nm silica magnetic beads;

• 1 µm silica magnetic beads;

• 2 µm magnetic silica microspheres;

• Customized particle sizes;

• Customized solids concentrations;

• Silica magnetic beads for DNA extraction;

• Silica magnetic beads for RNA extraction;

• OEM extraction bead components.

The AMS200-10 product is a 200 nm silica-coated magnetic bead suspension designed for nucleic acid extraction, DNA/RNA purification and biomolecule separation.

SANYU also offers larger magnetic silica microspheres for applications requiring different sedimentation, surface area or magnetic response characteristics.

Best Suited For

SANYU is particularly suitable for:

• Companies developing proprietary extraction buffers;

• Customized bead-size projects;

• Viral DNA and RNA extraction;

• Total nucleic acid purification;

• Automated extraction instruments;

• OEM extraction kits;

• Private-label products;

• Customers requiring direct factory communication.

Key Strengths

• Multiple nominal particle sizes;

• Direct raw-bead supply;

• Custom concentration;

• OEM and ODM capability;

• Flexible packaging;

• Suitability for open extraction platforms;

• Support for molecular diagnostic development;

• Factory-direct commercial communication.

What French Buyers Should Verify

French buyers should request:

• Particle-size measurement method;

• Particle-size distribution;

• Magnetic content;

• Silica coating characterization;

• Solids concentration;

• Suspension buffer;

• Preservative;

• DNA and RNA-binding data;

• Magnetic collection time;

• Bead carryover data;

• Nuclease and microbial testing;

• Batch-to-batch comparison;

• French or English SDS;

• EU import arrangements;

• Commercial capacity;

• Change-notification procedure.

For regulated IVD projects, buyers should also confirm whether SANYU can support:

• Formal quality agreements;

• Retained samples;

• Customized release specifications;

• Deviation investigations;

• Complaint handling;

• Long-term supply planning.

SANYU ranks third because it provides flexible raw-particle customization and OEM support for companies building proprietary nucleic acid extraction systems.

4. Merck MagPrep

Merck supplies MagPrep silica magnetic particles through its IVD/OEM materials and reagents portfolio.

MagPrep particles were designed as solid supports for nucleic acid purification. Merck states that they bind both DNA and RNA under chaotropic or mildly acidic conditions.

A France-localized Merck page describes MagPrep silica particles in the approximately 100–200 nm range and reports magnetic clearance in less than 15 seconds under the stated test conditions.

Merck also offers several MagPrep variants intended to provide different DNA and RNA-binding characteristics.

Main Products

Relevant products include:

• MagPrep Silica magnetic particles;

• HS-type MagPrep particles;

• MS-type MagPrep particles;

• LS-type MagPrep particles;

• Ultra pure MagPrep particles;

• MagPrep nucleic acid isolation kits;

• MagPrep cfDNA products;

• IVD/OEM magnetic particle services.

Best Suited For

Merck MagPrep is particularly suitable for:

• IVD manufacturers;

• OEM nucleic acid extraction kits;

• DNA and RNA purification;

• High-throughput screening;

• Automated extraction;

• Cell-free DNA workflows;

• Customers requiring established European commercial support.

Key Strengths

• Explicit IVD/OEM positioning;

• Standalone silica magnetic particles;

• Rapid magnetic clearance;

• Different DNA/RNA selectivity options;

• Nuclease and contamination-control options;

• French product documentation;

• Established European quality and supply infrastructure.

What French Buyers Should Verify

Buyers should compare:

• HS, MS and LS particle types;

• Intended DNA/RNA selectivity;

• Binding and wash-buffer requirements;

• Available French package sizes;

• Raw bead versus complete kit options;

• Manufacturing-use status;

• Bulk pricing;

• Reserved batch availability;

• Quality-agreement options.

Merck ranks fourth because MagPrep is directly positioned as a silica magnetic raw material for IVD and OEM nucleic acid purification.

5. Promega

Promega manufactures MagneSil silica-coated paramagnetic particles and uses them across several DNA purification systems.

Promega explains that silica-based nucleic acid purification chemistry can be adapted to silica-coated MagneSil paramagnetic particles.

MagneSil particles are available as standalone components and are used in genomic DNA, plasmid DNA and sequencing cleanup workflows. Promega maintains a France-specific product page for MagneSil particles.

Main Products

Relevant products include:

• MagneSil Paramagnetic Particles;

• MagneSil Blood Genomic systems;

• MagneSil RED particles;

• MagneSil GREEN particles;

• Wizard MagneSil sequencing cleanup systems;

• MagneSil plasmid purification systems;

• Fixed-yield genomic DNA systems.

Best Suited For

Promega is particularly suitable for:

• Genomic DNA purification;

• Blood DNA extraction;

• Plasmid DNA purification;

• Sanger sequencing cleanup;

• PCR product cleanup;

• Automated 96-well workflows;

• Laboratories requiring established buffer protocols.

Key Strengths

• Silica-coated paramagnetic particle technology;

• Standalone bead availability;

• Extensive extraction protocol library;

• Genomic and plasmid applications;

• Automation experience;

• French commercial presence;

• Multiple application-specific bead formulations.

What French Buyers Should Verify

Buyers should confirm:

• Whether the bead formulation is optimized for genomic DNA, plasmids or sequencing cleanup;

• Compatibility with proprietary buffers;

• Open-protocol use;

• Automation platform requirements;

• Standalone bead package sizes;

• Bulk and OEM supply;

• Commercial IVD support.

Promega ranks fifth because MagneSil combines direct particle availability with mature application-specific extraction systems.

6. QIAGEN

QIAGEN is one of the most established names in nucleic acid purification.

Its MagAttract technology combines the efficiency of silica-based DNA purification with magnetic particle handling. MagAttract Suspension G is separately available and is used in several DNA purification workflows.

QIAGEN also offers OEM nucleic acid purification services that include magnetic beads, extraction chemistry and customized commercial solutions. A dedicated French OEM page is available.

Main Products

Relevant products and platforms include:

• MagAttract Suspension G;

• MagAttract HMW DNA Kit;

• MagAttract 96 DNA products;

• QIAsymphony extraction systems;

• QIAsprint Connect;

• ClearMag components;

• OEM magnetic bead purification solutions.

Best Suited For

QIAGEN is particularly suitable for:

• High-molecular-weight DNA;

• Genomic DNA;

• Plant DNA;

• Viral and bacterial nucleic acids;

• Automated extraction;

• Laboratories using QIAGEN instruments;

• OEM molecular diagnostic systems.

Key Strengths

• Extensive silica-purification expertise;

• Magnetic bead and column technologies;

• Broad sample-type support;

• Automated platform integration;

• France-localized support;

• OEM purification services;

• Established downstream PCR and molecular testing ecosystem.

What French Buyers Should Verify

Buyers should determine:

• Whether MagAttract Suspension G can be used in an open proprietary protocol;

• Whether a complete QIAGEN kit is more appropriate;

• Instrument compatibility;

• OEM access conditions;

• Buffer and bead component availability;

• Commercial-use licensing;

• Long-term reagent support.

QIAGEN ranks sixth because of its mature silica-based purification chemistry, automation experience and OEM infrastructure.

7. New England Biolabs

New England Biolabs has expanded its Monarch Mag portfolio around silica-coated magnetic beads.

NEB states that Monarch Mag Beads M1 and M2 are silica-coated particles combining silica-based nucleic acid purification with magnetic bead handling.

Monarch Mag Beads M2 are listed separately on NEB’s French website.

The Monarch Mag Viral DNA/RNA kit uses silica-coated, submicron superparamagnetic beads for nucleic acid capture and supports both manual and automated workflows.

Main Products

Relevant products include:

• Monarch Mag Beads M1;

• Monarch Mag Beads M2;

• Monarch Mag Viral DNA/RNA Extraction Kit;

• Monarch Mag Cell-Free DNA Extraction Kit;

• Monarch Mag Cell-Free RNA Extraction Kit;

• Monarch Mag PCR and DNA Cleanup Kit.

Best Suited For

NEB is particularly suitable for:

• Viral DNA and RNA;

• Saliva and respiratory samples;

• Cell-free DNA;

• Cell-free RNA;

• PCR cleanup;

• NGS workflows;

• Manual and automated extraction;

• Laboratories integrating extraction with amplification or sequencing.

Key Strengths

• Clearly documented silica-coated beads;

• Standalone M2 bead product;

• Submicron particle design;

• Viral and cell-free nucleic acid products;

• Open automation compatibility;

• France-localized product information;

• Strong molecular biology technical support.

What French Buyers Should Verify

Several Monarch products are labeled for research use only.

Buyers should confirm:

• Research-use or manufacturing-use status;

• Whether standalone beads can be incorporated into commercial products;

• OEM or bulk availability;

• Change-control documentation;

• Commercial lot sizes;

• Automation protocol availability;

• Long-term supply terms.

NEB ranks seventh because of its expanding silica-coated bead portfolio and strong viral, cfDNA, cfRNA and cleanup applications.

8. Magtivio

Magtivio is a European specialist producer of magnetic sample-preparation particles.

The company describes itself as an independent producer of silica-enclosed iron oxide nanoparticles used in research and diagnostic laboratories.

Its MagSi-DNA products are supplied as solid phases for bind-wash-elute DNA extraction and purification protocols.

Multiple bead formulations are available, together with a trial kit for screening different particle types.

Main Products

Relevant products include:

• MagSi-DNA 600;

• MagSi-DNA Allround;

• MagSi-DNA 3.0;

• MagSi-DNA mf;

• MagSi-DNA mf COOH;

• MagSi-DNA Trial Kit;

• Magnetic beads for cleanup and size selection;

• Diagnostic and OEM magnetic particle solutions.

Best Suited For

Magtivio is particularly suitable for:

• Open extraction protocol development;

• Comparing several bead structures;

• Genomic DNA purification;

• Pathogen nucleic acid extraction;

• Sequencing cleanup;

• OEM European supply;

• Customers seeking a specialized bead producer.

Key Strengths

• European particle manufacturer;

• Silica-enclosed iron oxide technology;

• Multiple raw bead formulations;

• Trial kit for bead screening;

• High-concentration options;

• Research and diagnostic laboratory experience;

• Flexible protocol-development approach.

What French Buyers Should Verify

Buyers should compare:

• Bead diameter;

• Magnetic content;

• Concentration;

• Surface chemistry;

• Sample-matrix compatibility;

• Required binding chemistry;

• EU shipping lead time;

• Diagnostic manufacturing documentation;

• Custom production options.

Magtivio ranks eighth because it provides directly comparable raw particle formats from a specialized European manufacturer.

9. MACHEREY-NAGEL

MACHEREY-NAGEL offers the NucleoMag magnetic bead purification platform for DNA and RNA extraction.

Its portfolio covers magnetic bead purification from:

• Blood;

• Tissue;

• Bacteria and yeast;

• Food;

• Plant material;

• Clinical samples;

• PCR products;

• NGS libraries.

The NucleoMag process is based on reversible adsorption of nucleic acids to paramagnetic beads followed by magnetic separation, washing and elution.

The company maintains French-language product pages and supports both manual separators and automated magnetic rod systems.

Main Products

Relevant products include:

• NucleoMag B-Beads;

• NucleoMag P-Beads;

• NucleoMag RNA;

• NucleoMag RNA/DNA Pro;

• NucleoMag Pathogen;

• NucleoMag DNA Food;

• NucleoMag DNA Bacteria;

• NucleoMag NGS Cleanup and Size Select;

• NucleoMag SEP separators.

Best Suited For

MACHEREY-NAGEL is particularly suitable for:

• Broad sample-type extraction;

• Food testing;

• Pathogen detection;

• Bacterial and fungal DNA;

• PCR cleanup;

• NGS cleanup;

• Manual and 96-well automation;

• Laboratories seeking complete extraction chemistry.

Key Strengths

• Broad NucleoMag portfolio;

• French-language commercial support;

• Multiple sample-specific kits;

• Manual and automated processing;

• Open-platform automation applications;

• Strong European supply relevance.

What French Buyers Should Verify

MACHEREY-NAGEL is primarily a complete purification-system supplier rather than a general raw-bead catalog manufacturer.

Buyers should confirm:

• Whether beads are available separately;

• Whether proprietary buffers are required;

• OEM component availability;

• Commercial kit manufacturing rights;

• Automation protocols;

• Bulk reagent options;

• Custom project support.

MACHEREY-NAGEL ranks ninth because it offers one of the broadest magnetic nucleic acid purification portfolios available to French laboratories.

10. chemicell

chemicell is a German manufacturer and supplier of magnetic, fluorescent and functional particles.

Its geneMAG DNA and RNA purification products use magnetic silica beads for nucleic acid isolation.

The geneMAG RNA/DNA system is designed for total RNA and DNA extraction using magnetic silica beads, while sample-specific versions are available for blood, tissue, bacteria and saliva.

Some protocols identify SiMAG-DNA silica beads as the magnetic solid phase.

Main Products

Relevant products include:

• SiMAG-DNA silica beads;

• geneMAG RNA/DNA;

• geneMAG RNA/DNA 96;

• geneMAG DNA Blood;

• geneMAG DNA Tissue;

• geneMAG DNA Bacteria;

• geneMAG DNA Saliva;

• Sample-specific magnetic extraction systems.

Best Suited For

chemicell is particularly suitable for:

• Total DNA and RNA extraction;

• Blood DNA;

• Tissue DNA;

• Bacterial DNA;

• Saliva DNA;

• Manual extraction;

• 96-well extraction;

• Customers seeking a European magnetic particle specialist.

Key Strengths

• Explicit magnetic silica bead technology;

• Multiple sample-specific protocols;

• European manufacturing and supply;

• Manual and high-throughput formats;

• Separately identifiable SiMAG-DNA bead component;

• Specialist magnetic particle expertise.

What French Buyers Should Verify

Buyers should confirm:

• Standalone bead availability;

• Bead concentration;

• Particle-size distribution;

• Magnetic separation speed;

• Required buffer chemistry;

• Commercial-scale quantities;

• France delivery terms;

• OEM documentation;

• Quality and change-control procedures.

chemicell ranks tenth because of its focused magnetic silica technology and sample-specific DNA and RNA purification systems.

Best Manufacturers by Extraction Application

The table is a starting point. Final selection must be based on experimental data generated with the intended sample, extraction chemistry and downstream assay.

How Silica Magnetic Beads Work

A typical silica magnetic bead extraction procedure includes four main stages.

Step 1: Sample Lysis

The sample is treated to release DNA or RNA.

Depending on the sample type, lysis may involve:

• Chaotropic salts;

• Detergents;

• Proteinase K;

• Reducing agents;

• Mechanical disruption;

• Heating;

• Enzymatic digestion.

Step 2: Nucleic Acid Binding

Silica magnetic beads and binding reagents are added to the lysate.

Under suitable salt, pH and alcohol conditions, hydration layers around the silica and nucleic acids are reduced, enabling DNA or RNA to adsorb to the bead surface.

Step 3: Magnetic Washing

A magnet collects the bead–nucleic acid complex.

The supernatant is removed, and the beads are washed to eliminate:

• Proteins;

• Lipids;

• Salts;

• Detergents;

• PCR inhibitors;

• Cellular debris;

• Unwanted nucleic acid fractions.

Step 4: Elution

After residual alcohol is removed, the beads are resuspended in water or a low-salt buffer.

The nucleic acid is released from the silica surface and transferred into the elution solution.

The performance of this process depends on the bead, buffer and automation program functioning as one integrated system.

Critical Silica Magnetic Bead Specifications to Compare

1. Particle Diameter

Smaller beads provide greater surface area per unit mass but may:

• Require more time for magnetic collection;

• Remain suspended longer;

• Increase bead carryover;

• Be more difficult to separate with weak magnets.

Larger particles may separate rapidly but can provide less surface area for binding.

Particle size should therefore be optimized for the intended:

• Sample volume;

• Binding capacity;

• Magnet configuration;

• Pipetting system;

• Throughput.

2. Particle-Size Distribution

Request:

• Mean diameter;

• Measurement method;

• Coefficient of variation;

• Polydispersity index;

• D10, D50 and D90;

• Aggregate percentage.

A broad distribution may produce inconsistent settling, dispensing and magnetic collection.

3. Silica Surface Chemistry

Not all silica-like surfaces behave identically.

Differences may include:

• Silanol density;

• Surface porosity;

• Coating thickness;

• Surface charge;

• Hydrophilicity;

• Residual functional groups;

• Nucleic acid selectivity.

The bead should be tested with the intended binding and wash buffers.

4. Magnetic Content and Response

Evaluate:

• Magnetic collection time;

• Percentage of beads collected;

• Residual beads in the supernatant;

• Response in tubes and deep-well plates;

• Performance at different sample volumes;

• Compatibility with magnetic rods.

Fast collection is useful, but excessively strong bead aggregation can make redispersion difficult.

5. Nucleic Acid-Binding Capacity

Request data for:

• DNA-binding capacity;

• RNA-binding capacity;

• Short-fragment recovery;

• High-molecular-weight DNA;

• Low-concentration targets;

• Saturation behavior.

Catalog capacity values may not predict performance in complex clinical samples.

6. Redispersibility

The beads should redisperse consistently after magnetic collection.

Poor redispersion can cause:

• Reduced washing efficiency;

• Lower elution yield;

• Well-to-well variability;

• Incomplete bead transfer;

• Automation errors.

7. Sedimentation and Dispensing

Beads that settle too quickly can create concentration differences between the beginning and end of a dispensing run.

Evaluate:

• Time to visible sedimentation;

• Mixing frequency;

• Compatibility with reagent reservoirs;

• Pipette aspiration consistency;

• Concentration uniformity across a 96-well plate.

8. Bead Carryover

Residual beads in the eluate may affect:

• Absorbance measurements;

• Fluorescence;

• PCR;

• RT-PCR;

• Sequencing library preparation;

• Enzyme reactions.

Carryover should be tested using the intended magnet, plate and aspiration height.

9. Suspension Buffer

Ask the supplier to disclose:

• Buffer composition;

• pH;

• Preservative;

• Surfactant;

• Solids concentration;

• Storage temperature;

• Shelf life.

These components may interact with proprietary extraction reagents.

10. Contamination Control

For sensitive molecular diagnostics, request information concerning:

• DNase contamination;

• RNase contamination;

• Human DNA contamination;

• Microbial contamination;

• Endotoxin where relevant;

• Lot-release testing.

How to Select Beads for Automated Extraction

Automation compatibility should be evaluated using the complete instrument workflow.

Magnetic Rod Systems

For magnetic rod instruments, assess:

• Bead pickup efficiency;

• Bead release;

• Rod-cover geometry;

• Mixing speed;

• Transfer between plates;

• Residual bead loss;

• Plate depth and volume.

Fixed-Magnet Plate Systems

For plates placed on a fixed magnet, evaluate:

• Pellet location;

• Collection time;

• Aspiration clearance;

• Well shape;

• Bead ring or pellet stability;

• Residual liquid removal.

Liquid-Handling Robots

For open liquid handlers, assess:

• Reagent mixing requirements;

• Bead sedimentation;

• Pipette-tip compatibility;

• Aspiration height;

• Dispensing precision;

• Cross-contamination risk.

Cartridge-Based Systems

For closed cartridges, evaluate:

• Bead movement through internal channels;

• Magnet position;

• Bubble formation;

• Chamber geometry;

• Reagent viscosity;

• Long-term storage inside the cartridge.

A bead that performs well manually may not automatically perform well in an automated platform.

France and EU Regulatory Considerations

Raw Beads and Finished IVD Devices Are Different

A silica magnetic bead supplied solely as an upstream manufacturing material is not automatically equivalent to a finished IVD device.

Regulatory status depends on:

• Intended purpose;

• Product claims;

• Labeling;

• Packaging;

• Instructions;

• Whether the material is marketed as a calibrator, control, reagent or finished diagnostic component.

The manufacturer of a finished IVD remains primarily responsible for conformity assessment and CE marking under the IVDR.

Product-specific regulatory advice should be obtained before placing a diagnostic product on the French or wider EU market.

EUDAMED in 2026

The European Commission states that mandatory use of the relevant EUDAMED modules begins on May 28, 2026.

This primarily affects finished medical devices and the responsible economic operators rather than general raw magnetic beads. Nevertheless, French IVD manufacturers should ensure their regulatory and supply-chain records support their broader IVDR obligations.

French-Language Safety Documentation

Where a Safety Data Sheet is required under REACH and CLP, supply-chain actors should ensure that it is provided in the appropriate national language.

ECHA states that hazardous substances or mixtures requiring an SDS should be accompanied by documentation in the applicable national language and with relevant national information.

French buyers should therefore request, where applicable:

• French SDS;

• English technical specification;

• French transport information;

• Hazard classification;

• Disposal guidance;

• Storage instructions.

Importing From Outside the EU

When purchasing from a non-EU supplier, clarify:

• Importer of record;

• Customs classification;

• Incoterms;

• VAT and import duties;

• REACH responsibilities;

• Shipping temperature;

• Product labeling;

• Returns and complaint handling;

• Local safety stock.

The regulatory role of an importer for a raw material is not necessarily the same as the role of an IVDR importer for a finished medical device.

Supplier Changes Must Be Controlled

Potentially significant bead changes include:

• Magnetic core material;

• Silica coating process;

• Particle diameter;

• Particle-size distribution;

• Surface chemistry;

• Solids concentration;

• Suspension buffer;

• Preservative;

• Manufacturing site;

• Release test method;

• Packaging material.

The supply agreement should define how far in advance the supplier must notify the customer of relevant changes.

Recommended Supplier Qualification Process

Step 1: Define the Intended Application

Specify whether the beads will be used for:

• Viral RNA;

• Genomic DNA;

• cfDNA;

• Total RNA;

• Plasmid DNA;

• PCR cleanup;

• NGS cleanup;

• Another application.

Step 2: Define Critical Material Attributes

Create a written bead specification covering:

• Particle size;

• Size distribution;

• Magnetic content;

• Silica surface;

• Solids concentration;

• Binding capacity;

• Collection time;

• Redispersibility;

• Buffer;

• Preservative;

• Storage;

• Shelf life.

Step 3: Obtain Several Candidate Beads

Evaluate at least two or three suppliers.

Where possible, obtain samples representing normal production batches rather than one-off development material.

Step 4: Use a Standardized Screening Protocol

Compare suppliers using the same:

• Sample;

• Lysis buffer;

• Binding buffer;

• Bead mass;

• Binding time;

• Mixing method;

• Magnet;

• Wash conditions;

• Elution conditions.

Step 5: Optimize Each Bead Independently

Different beads may require different:

• Alcohol concentrations;

• Chaotropic salt levels;

• Bead doses;

• Mixing speeds;

• Binding times;

• Wash steps;

• Drying times;

• Elution temperatures.

Step 6: Test Relevant Sample Types

Use representative samples such as:

• Whole blood;

• Plasma;

• Serum;

• Saliva;

• Swabs;

• Urine;

• Tissue;

• Stool;

• Food;

• Environmental samples.

Step 7: Evaluate Downstream Performance

Measure:

• DNA or RNA yield;

• A260/A280;

• A260/A230;

• PCR Ct values;

• RT-PCR inhibition;

• Fragment-size distribution;

• NGS library quality;

• Sequencing performance;

• Bead carryover.

Step 8: Test Multiple Lots

Compare at least three production lots whenever practical.

Evaluate:

• Particle size;

• Concentration;

• Magnetic response;

• Binding yield;

• Extraction purity;

• Downstream assay performance.

Step 9: Review Commercial Supply Capability

Confirm:

• Minimum order quantity;

• Pilot quantity;

• Commercial batch size;

• Annual production capacity;

• Lead time;

• Safety-stock options;

• Bulk packaging;

• Backup production;

• Discontinuation notice.

Step 10: Establish a Quality Agreement

The agreement should cover:

• Approved specifications;

• Test methods;

• Certificate requirements;

• Change notification;

• Deviation handling;

• Complaint investigation;

• Retained samples;

• Traceability;

• Audit rights;

• Discontinuation notice.

Frequently Asked Questions

Are all ten manufacturers located in France?

No.

The ranking covers manufacturers and specialist suppliers serving French customers. Some maintain French commercial operations, while others supply France from elsewhere in Europe, the United States or Asia.

Is SANYU the only Chinese manufacturer included?

Yes.

SANYU is ranked third and is the only China-based company included. No other Chinese silica magnetic bead manufacturer appears in this list.

Which company offers the strongest standalone raw bead option?

Cytiva, Thermo Fisher, SANYU, Merck, Promega, NEB and Magtivio all provide relevant separately orderable particles.

Cytiva SeraSil-Mag and Merck MagPrep are particularly clearly positioned as raw silica magnetic particles.

Which supplier is best for customized beads?

SANYU is particularly relevant when the customer requires customized:

• Particle size;

• Concentration;

• Packaging;

• OEM supply;

• Private labeling.

Cytiva, Thermo Fisher, Merck, QIAGEN and Magtivio also provide different forms of OEM or commercial-development support.

Which beads are suitable for viral RNA extraction?

Relevant suppliers include:

• Thermo Fisher;

• SANYU;

• QIAGEN;

• New England Biolabs;

• MACHEREY-NAGEL;

• chemicell.

Actual viral RNA recovery must be tested with the intended sample matrix and RT-qPCR assay.

Which suppliers are suitable for cfDNA?

Relevant options include:

• Cytiva;

• Thermo Fisher;

• Merck;

• New England Biolabs.

Short-fragment recovery, plasma input volume, elution volume and genomic DNA contamination should all be evaluated.

Which supplier is suitable for high-molecular-weight DNA?

QIAGEN’s MagAttract HMW workflow is designed specifically around high-molecular-weight genomic DNA.

Thermo Fisher and SANYU may also be evaluated when developing customized HMW DNA extraction procedures.

Which suppliers support PCR or NGS cleanup?

Relevant suppliers include:

• Promega;

• New England Biolabs;

• MACHEREY-NAGEL;

• Cytiva;

• Magtivio.

Cleanup beads should be evaluated for fragment recovery, size bias, inhibitor removal and automation compatibility.

Are silica magnetic beads automatically suitable for IVD manufacturing?

No.

A bead may perform well in research but still lack:

• Commercial manufacturing support;

• Controlled specifications;

• Change notification;

• Batch traceability;

• Quality agreements;

• Long-term supply guarantees.

Do raw silica magnetic beads require CE marking?

Not automatically.

The regulatory status depends on the intended purpose and how the product is marketed.

A general manufacturing raw material is different from a finished IVD reagent, calibrator or control with a diagnostic intended purpose.

French companies should obtain product-specific regulatory advice.

What documents should French buyers request?

At minimum, request:

• Certificate of Analysis;

• Safety Data Sheet;

• Technical data sheet;

• Particle-size report;

• Solids concentration;

• Surface chemistry information;

• Magnetic response data;

• Stability information;

• Batch traceability;

• Quality certificate;

• Change-control policy;

• Shipping documents.

Should French buyers request a French SDS?

Where an SDS is legally required, a French-language version should be requested for supply into France.

Technical development documents may also be maintained in English, depending on the company’s internal quality procedures.

Can beads from different manufacturers be used interchangeably?

Usually not without reoptimization.

Differences in size, silica chemistry, magnetic content, concentration and buffer formulation can affect:

• Binding;

• Washing;

• Elution;

• Automation;

• PCR performance.

A supplier change may require analytical comparison and potentially revalidation.

How many suppliers should be evaluated?

Testing two or three suppliers is advisable for critical commercial projects.

This supports both technical comparison and supply-chain continuity.

Final Recommendations

Choose Cytiva when the project requires clearly defined, standalone silica-coated superparamagnetic beads for sensitive DNA extraction and OEM development.

Choose Thermo Fisher Scientific when the project requires Dynabeads MyOne Silane, broad MagMAX extraction chemistry and integration with KingFisher automation.

Choose SANYU when the project requires customized particle sizes, factory-direct raw bead supply, OEM packaging or proprietary extraction kit development.

Choose Merck MagPrep when the project requires IVD/OEM-oriented silica magnetic particles, rapid magnetic response and established European technical documentation.

Choose Promega for genomic DNA, plasmid purification, sequencing cleanup and mature MagneSil extraction protocols.

Choose QIAGEN for high-molecular-weight DNA, automated purification, proprietary sample workflows and OEM nucleic acid extraction solutions.

Choose New England Biolabs for viral DNA/RNA, cfDNA, cfRNA and PCR cleanup using silica-coated Monarch Mag beads.

Choose Magtivio when an independent European raw-particle manufacturer and a range of MagSi bead formulations are preferred.

Choose MACHEREY-NAGEL for complete NucleoMag workflows covering clinical, food, pathogen, bacterial, PCR and NGS samples.

Choose chemicell for SiMAG-DNA and geneMAG sample-specific magnetic silica extraction systems.

The final supplier should not be selected only by brand recognition, nominal particle diameter or catalog price.

The strongest qualification process is to:

1. Define the target sample and downstream assay;

2. Compare representative bead samples;

3. Optimize each bead independently;

4. Evaluate manual and automated performance;

5. Test multiple production lots;

6. Review France and EU documentation;

7. Confirm commercial production capacity;

8. Establish a formal quality and change-control agreement.

This approach gives French molecular diagnostic and biotechnology companies a stronger foundation for extraction yield, assay reproducibility, regulatory readiness and long-term supply continuity.