400nm Standard Polystyrene Microspheres SPS400-10 5%

400nm Standard Polystyrene Microspheres SPS400-10

SHBC SPS400-10 Standard Polystyrene Microspheres are uniform plain polystyrene particles with a nominal diameter of 400 nm and a solid content of 5%.

The spherical particles are suitable for particle analysis, microscopy, light-scattering research, physical protein adsorption, latex agglutination and colloid studies.

Product Overview

SPS400-10 provides a consistent 0.4 μm polymer particle system for scientific research, assay development and industrial testing.

The concentrated 5% solids dispersion supports flexible dilution, repeated experiments, pilot projects and bulk production requirements.

Technical Specifications

Key Advantages

• Uniform 400 nm particle size

• Regular spherical morphology

• Controlled particle size distribution

• Concentrated 5% solids dispersion

• Good suspension performance

• Easy dilution and handling

• Suitable for passive protein adsorption

• Consistent batch production

• Flexible packaging volumes

• OEM and customized supply available

Applications of 400nm Polystyrene Microspheres

Particle Size Analysis

SPS400-10 can be used as a model particle for particle-size measurement, analytical method development and comparative testing.

Dynamic Light Scattering

The controlled particle diameter supports DLS method optimization, dispersion evaluation and particle aggregation studies.

Electron and Atomic Force Microscopy

The spherical particles can support SEM, TEM and AFM sample preparation, particle imaging and morphology research.

Laser Light-Scattering Research

SPS400-10 provides a defined polymer particle system for optical scattering, light-extinction and particle-detection studies.

Physical Protein Adsorption

The hydrophobic plain polystyrene surface can be evaluated for passive adsorption of proteins, antibodies and antigens.

Latex Agglutination Assays

SPS400-10 may be used as a carrier particle for latex agglutination reagent research and diagnostic assay development.

Latex Turbidimetric Immunoassays

The particles can be evaluated for antibody or antigen coating in particle-enhanced turbidimetric assay development.

Colloid and Dispersion Research

SPS400-10 is suitable for studying suspension stability, particle aggregation, surface interactions and colloidal behavior.

Filtration and Membrane Studies

The 0.4 μm particles can support membrane-retention, filtration-efficiency, particle-transport and recovery studies.

Flow and Particle-Counting Research

The microspheres may be evaluated for particle counting, flow-system testing and instrument-response studies.

Why Choose 400nm Polystyrene Microspheres?

The 400 nm diameter provides a practical balance between submicron particle behavior and strong optical detectability.

Its spherical morphology supports consistent results in particle analysis, immunoassay development, microscopy and colloid research.

Typical applications include:

• Particle characterization

• Protein adsorption

• Latex agglutination

• Turbidimetric assays

• Optical scattering

• Dispersion studies

• Membrane evaluation

• Microscopy imaging

Standard Plain Polystyrene Surface

SPS400-10 has a non-functionalized polystyrene surface without added carboxyl or amino groups.

The hydrophobic surface is suitable for general particle research and passive biomolecule adsorption.

For controlled covalent coupling, SHBC also supplies carboxyl, amino and other functionalized polystyrene microspheres.

Benefits of 5% Solid Content

SPS400-10 is supplied at 5% solids for flexible laboratory and production use.

The concentrated format allows users to prepare different working concentrations while supporting repeated tests, formulation development and larger-volume projects.

Standard Microspheres or Certified Size Standards?

SPS400-10 is positioned as a standard plain polystyrene microsphere for research and method development.

It should only be described as a certified or traceable particle-size standard when corresponding certification documents are supplied for the specific product and batch.

Customers requiring calibration materials should confirm particle-size tolerance, CV, testing method and documentation before ordering.

Why Choose SHBC?

Shanghai SanYu Biotechnology Co., Ltd. manufactures standard and functional microspheres for scientific research, diagnostic development and industrial production.

SHBC supply advantages include:

• Multiple particle sizes available

• Standard and functional surfaces

• Laboratory sample supply

• Pilot-scale production

• Bulk manufacturing capability

• Customized solid content

• Flexible packaging options

• OEM and private-label services

• Technical product-selection support

Customized Microsphere Supply

Available customization options include:

• Customized particle diameter

• Customized solid content

• Customized dispersion medium

• Carboxyl surface modification

• Amino surface modification

• Fluorescent labeling

• Colored particles

• Customized packaging volume

• OEM labeling

• Bulk production

Storage and Handling

Keep the container tightly closed and store according to the product label, COA and SDS.

Gently mix or briefly sonicate the dispersion before use. Avoid freezing, drying, high temperatures, direct sunlight and contamination.

Frequently Asked Questions

What is SPS400-10?

SPS400-10 is a plain polystyrene microsphere dispersion with a nominal particle diameter of 400 nm and a solid content of 5%.

What is 400nm in micrometers?

A diameter of 400 nm is equivalent to 0.40 μm.

What is the particle surface?

SPS400-10 has a standard non-functionalized polystyrene surface without added carboxyl or amino groups.

What are 400nm polystyrene microspheres used for?

Typical applications include particle analysis, microscopy, light scattering, protein adsorption, latex agglutination, turbidimetric assays and colloid research.

Can SPS400-10 adsorb antibodies or proteins?

The plain polystyrene surface can be evaluated for passive adsorption of antibodies, antigens and proteins through non-covalent interactions.

Can SPS400-10 be used for latex agglutination?

Yes. The particles may be evaluated as a carrier for latex agglutination reagent development. Coating and reaction conditions should be optimized for each assay.

Can the microspheres be diluted?

Yes. The 5% dispersion can be diluted to the required working concentration using a compatible medium.

Are functionalized versions available?

Yes. SHBC can provide carboxyl, amino, fluorescent, colored and other customized polystyrene microspheres.

Is SPS400-10 a certified calibration standard?

The product should only be described as certified or traceable when corresponding documentation is supplied for the specific product and batch.

Are bulk quantities available?

Yes. SHBC supports laboratory samples, pilot projects, customized packaging and bulk production.

Request SPS400-10 Samples and Quotations

Contact Shanghai SanYu Biotechnology Co., Ltd. for SPS400-10 samples, technical specifications, customized packaging and bulk quotations.

SHBC supplies standard polystyrene microspheres for research laboratories, diagnostic manufacturers, instrument developers and industrial projects.

For Research Use Only.