15um Epoxy Magnetic Beads MEP15UM-10 5%

15 μm Epoxy Magnetic Beads MEP15UM-10

SHBC MEP15UM-10 Epoxy Magnetic Beads are 15 μm functional magnetic microspheres supplied at 5% solids.

The reactive epoxy surface is designed for covalent immobilization of antibodies, antigens, proteins, peptides, enzymes and other compatible biomolecules.

MEP15UM-10 is suitable for immunoassay development, magnetic separation, biomolecule capture and scalable reagent production.

MEP15UM-10 Technical Specifications

Epoxy Coupling Principle

Epoxy groups on the bead surface can react with compatible amino or sulfhydryl groups in antibodies, proteins, peptides and enzymes.

The resulting covalent attachment helps retain the immobilized ligand during magnetic separation and repeated washing. Epoxy magnetic beads are widely used to prepare customized antibody- or protein-functionalized particles.

Key Advantages of MEP15UM-10

• Reactive epoxy-functional surface

• 15 μm particle size

• Supplied at 5% solids

• Direct covalent ligand immobilization

• No EDC/NHS activation normally required

• Suitable for antibodies, antigens and proteins

• Convenient magnetic collection and washing

• Stable ligand attachment

• Flexible custom surface modification

• Suitable for research and production scale-up

Why Choose 15 μm Epoxy Magnetic Beads?

The 15 μm particle format supports straightforward bead handling, magnetic collection and repeated washing.

MEP15UM-10 is suitable for projects requiring:

• Easy magnetic solid-phase handling

• Custom antibody-coated beads

• Custom antigen-coated beads

• Large-particle magnetic separation

• Manual or automated washing

• Scalable reagent preparation

Immunoassay Applications

Antibody-Coupled Magnetic Beads

Capture antibodies can be immobilized on MEP15UM-10 for:

• Sandwich immunoassays

• Chemiluminescent immunoassays

• Fluorescent immunoassays

• Enzyme immunoassays

• Magnetic immunoassays

• Biomarker detection

• Pathogen-detection research

Antigen-Coupled Magnetic Beads

Antigens can be coupled for:

• Antibody-detection assays

• Serological research

• Autoantibody assay development

• Infectious-disease research

• Assay calibration

• Method validation

Automated Immunoassay Workflows

Magnetic beads simplify solid-phase collection, washing and buffer exchange.

MEP15UM-10 can be evaluated in:

• Automated chemiluminescence analyzers

• Magnetic washing instruments

• Liquid-handling platforms

• High-throughput assay systems

• Custom diagnostic reagent platforms

Commercial epoxy magnetic-bead systems are commonly positioned for immunoassays, immunoprecipitation and automated magnetic processing.

Protein and Biomolecule Applications

MEP15UM-10 can also be evaluated for:

• Immunoprecipitation

• Protein enrichment

• Protein-complex isolation

• Enzyme immobilization

• Affinity ligand preparation

• Biomolecule capture

• Biosensor development

• Custom magnetic purification

Suitable Coupling Molecules

The epoxy-functional surface can be evaluated with:

• Monoclonal antibodies

• Polyclonal antibodies

• Recombinant proteins

• Antigens

• Peptides

• Enzymes

• Lectins

• Other compatible affinity ligands

Coupling efficiency depends on ligand purity, concentration, accessible functional groups and reaction conditions.

General Coupling Workflow

1. Resuspend the Beads

Mix the suspension thoroughly before sampling to obtain a uniform bead concentration.

2. Wash the Magnetic Beads

Collect the beads using a magnetic separator and replace the storage solution with a suitable coupling buffer.

3. Add the Ligand

Add the purified antibody, antigen, protein or enzyme to the washed beads.

4. Perform Covalent Coupling

Incubate under optimized buffer, temperature and mixing conditions.

5. Block Residual Epoxy Groups

Deactivate remaining reactive groups using a suitable blocking reagent.

6. Wash the Coupled Beads

Remove unbound biomolecules and reaction components through repeated magnetic washing.

7. Resuspend and Evaluate

Resuspend the functionalized beads in the selected storage or assay buffer and evaluate performance.

Factors Affecting Coupling Efficiency

Important optimization factors include:

• Ligand purity

• Ligand concentration

• Bead-to-ligand ratio

• Coupling-buffer composition

• Buffer pH

• Ionic strength

• Reaction temperature

• Incubation time

• Mixing efficiency

• Blocking conditions

Small-scale testing is recommended before production scale-up.

Immunoassay Development Tips

• Use purified antibodies or antigens.

• Avoid unnecessary carrier proteins.

• Confirm buffer and preservative compatibility.

• Keep beads uniformly suspended during coupling.

• Optimize ligand loading for signal and background.

• Block residual epoxy groups after coupling.

• Evaluate nonspecific binding.

• Confirm magnetic separation performance.

• Test coupled-bead storage stability.

• Verify batch-to-batch assay consistency.

Protein-containing additives may compete with the target ligand for reactive bead surfaces, so formulation components should be reviewed before coupling.

Scale-Up Quality Control

For bulk immunoassay reagent production, evaluate:

• Particle-size consistency

• Suspension uniformity

• Solid-content consistency

• Magnetic collection performance

• Coupling efficiency

• Ligand loading

• Nonspecific binding

• Signal-to-background ratio

• Assay sensitivity

• Storage stability

• Batch reproducibility

MEP15UM-10 vs. Passive Adsorption Beads

Why Choose SHBC MEP15UM-10?

• 15 μm epoxy-functional magnetic beads

• 5% solid-content suspension

• Suitable for immunoassay development

• Flexible antibody and antigen coupling

• Research and manufacturing quantities

• Sample evaluation support

• Stable batch supply

• Bulk production capability

• Custom packaging options

• Technical support for product selection

Storage and Handling

Store MEP15UM-10 according to the product label and technical documentation.

Recommended practices:

• Keep the container tightly sealed.

• Mix thoroughly before use.

• Avoid freezing unless validated.

• Prevent microbial contamination.

• Use clean pipettes and containers.

• Avoid prolonged magnetic collection during storage.

• Review the SDS before use.

Frequently Asked Questions

What is MEP15UM-10?

MEP15UM-10 is a 15 μm epoxy-functional magnetic bead suspension supplied at 5% solids.

What biomolecules can be coupled?

The beads can be evaluated for antibodies, antigens, proteins, peptides, enzymes and other compatible ligands.

Is EDC/NHS activation required?

No. The surface already contains reactive epoxy groups, so EDC/NHS activation is not normally required.

Can antibodies be coupled directly?

Yes. Compatible functional groups on purified antibodies can react with the epoxy surface.

Can MEP15UM-10 be used for immunoassays?

Yes. It can be used to develop magnetic solid phases for antibody, antigen and biomarker-detection assays.

Why should residual epoxy groups be blocked?

Blocking deactivates unreacted surface groups and helps reduce unwanted downstream reactions.

Can the beads be used for immunoprecipitation?

Yes. After coupling a suitable antibody, the beads can be evaluated for immunoprecipitation and protein enrichment.

Are the beads suitable for automated systems?

The magnetic format can be evaluated in automated separation, washing and liquid-handling workflows.

Is coupling optimization necessary?

Yes. Ligand loading, buffer, pH, temperature, incubation time and blocking conditions should be optimized for each application.

Can SHBC supply bulk quantities?

Yes. SHBC supports sample evaluation, research supply and bulk production for immunoassay developers and reagent manufacturers.

Request MEP15UM-10 Samples

Contact Shanghai SanYu Biotechnology Co., Ltd. for samples, technical documentation and bulk quotations.

Please provide:

• Target antibody or antigen

• Immunoassay format

• Coupling scale

• Required bead quantity

• Current coupling method

• Target application

• Estimated annual demand

MEP15UM-10 is supplied for research and development. Final diagnostic use requires validation by the customer.