45um Standard Polystyrene Microspheres SPS45UM-10 5%

45um Standard Polystyrene Microspheres SPS45UM-10

SHBC SPS45UM-10 Standard Polystyrene Microspheres are spherical polystyrene particles with a nominal diameter of 45 μm and a solid content of 5%.

They are suitable for particle analysis, optical microscopy, filtration testing, fluid mechanics, microfluidic research and sedimentation studies.

Product Overview

SPS45UM-10 provides a controlled 45 micron particle platform for laboratory research, analytical method development and industrial testing.

The particles offer convenient optical visibility and regular spherical morphology. The 5% solids suspension supports flexible dilution, repeated testing and bulk projects.

Technical Specifications

Actual mean diameter and particle-size distribution are batch-specific. Refer to the applicable Certificate of Analysis.

Key Advantages

• Nominal diameter of 45 μm

• Regular spherical morphology

• Concentrated 5% solids

• Easy optical observation

• Convenient dilution and sampling

• Suitable for filtration studies

• Suitable for fluid-flow research

• Flexible packaging options

• Bulk production available

• Customized specifications supported

Applications of 45um Polystyrene Microspheres

Particle Size Analysis

SPS45UM-10 can be evaluated as a model particle for particle-size measurement, comparative testing and analytical method development.

Optical Microscopy

The 45 μm microspheres are readily visible under suitable optical microscopy conditions, supporting particle counting, tracking and morphology observation.

Particle Counter Evaluation

The controlled particle diameter supports particle-detection studies, counting-method development and instrument-response testing.

Filtration and Membrane Testing

SPS45UM-10 is suitable for filter-retention, large-pore filtration, membrane-efficiency and particle-recovery studies.

Fluid Mechanics Research

The microspheres can support flow visualization, particle transport, settling behavior and fluid–particle interaction studies.

Microfluidic Testing

SPS45UM-10 may be used for channel evaluation, particle transport, separation studies and microfluidic device development.

Sedimentation Studies

The controlled particle size supports settling-rate, suspension-stability, aggregation and particle-recovery research.

Microplastic Research

The particles may be evaluated as a defined polystyrene model for environmental sampling, transport, recovery and analytical-method studies.

Surface Interaction Studies

The standard polystyrene surface can support physical adsorption and particle–molecule interaction research.

Why Choose 45um Polystyrene Microspheres?

The 45 μm diameter combines easy microscopic observation with controlled particle geometry.

Typical research areas include:

• Particle characterization

• Optical imaging

• Particle counting

• Filter evaluation

• Fluid-flow testing

• Microfluidic transport

• Sedimentation analysis

• Microplastic method development

Benefits of 5% Solid Content

SPS45UM-10 is supplied at 5% solids for flexible laboratory and production use.

The concentrated suspension can be diluted to different working concentrations and supports repeated experiments, pilot projects and larger-volume requirements.

The suspension format also reduces weighing and particle-preparation steps compared with dry microspheres.

Standard Polystyrene Surface

SPS45UM-10 has a standard polystyrene surface without intentionally added fluorescent dyes or functional groups.

It is suitable for general particle, filtration and surface-interaction research.

SHBC also supplies carboxyl, amino, fluorescent and colored polystyrene microspheres for specialized applications.

Standard Microspheres or Certified Size Standards?

SPS45UM-10 is positioned as a standard research-grade polystyrene microsphere.

It should only be described as certified, calibrated or traceable when corresponding documents are supplied for the specific product and batch.

Customers requiring certified standards should confirm:

• Actual mean diameter

• Particle-size tolerance

• Standard deviation

• Coefficient of variation

• Measurement method

• Traceability documentation

Quality and Batch Documentation

Available product documentation may include:

• Product code

• Batch number

• Actual mean particle diameter

• Particle-size distribution

• Solid content

• Product appearance

• Certificate of Analysis

• Safety Data Sheet

Why Choose SHBC?

Shanghai SanYu Biotechnology Co., Ltd. supplies standard and functional microspheres for research, analytical development and industrial applications.

SHBC supply advantages include:

• Multiple particle sizes

• Standard and functional surfaces

• Laboratory sample supply

• Pilot and bulk production

• Customized solid content

• Flexible packaging volumes

• OEM and private-label services

• Technical product-selection support

Customized Microsphere Supply

Customization options include:

• Particle diameter

• Solid content

• Dispersion medium

• Surface functionalization

• Fluorescent labeling

• Particle color

• Packaging volume

• OEM labeling

• Bulk production

Storage and Handling

Store SPS45UM-10 according to the product label, COA and SDS.

Particles of this size may settle during storage. Gently mix the suspension until uniform before sampling or dilution.

Avoid freezing, drying, excessive heat and contamination. Do not sample only from the upper layer of a settled suspension.

Frequently Asked Questions

What is SPS45UM-10?

SPS45UM-10 is a standard polystyrene microsphere suspension with a nominal diameter of 45 μm and a solid content of 5%.

Is 45um equal to 45 microns?

Yes. A diameter of 45 μm, 45um or 45 microns is equal to 45,000 nm.

What are 45um polystyrene microspheres used for?

Typical applications include particle analysis, microscopy, filtration testing, fluid mechanics, microfluidics, sedimentation and microplastic research.

Can the particles be observed with an optical microscope?

Yes. The 45 μm particle diameter provides convenient visibility under suitable optical microscopy conditions.

Do 45um microspheres settle during storage?

Yes. Particles of this size may gradually settle. Thoroughly redisperse the suspension before sampling.

Can SPS45UM-10 be diluted?

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

Can it be used for filter testing?

SPS45UM-10 may be evaluated for filter-retention, membrane-efficiency and particle-recovery studies.

Is SPS45UM-10 a certified calibration standard?

It should only be described as certified or traceable when corresponding certification documents are supplied for the specific batch.

Are customized versions available?

Yes. SHBC can provide customized particle sizes, solid content, surface groups, colors, fluorescence and packaging volumes.

Are bulk quantities available?

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

Request SPS45UM-10 Samples and Quotations

Contact Shanghai SanYu Biotechnology Co., Ltd. for SPS45UM-10 samples, technical specifications, customized packaging and bulk quotations.

SHBC supplies standard polystyrene microspheres for research laboratories, instrument developers, filtration companies, environmental researchers and industrial projects.

For Research Use Only.