90um Standard Polystyrene Microspheres SPS90UM-10 5%

90um Standard Polystyrene Microspheres SPS90UM-10

SHBC SPS90UM-10 Standard Polystyrene Microspheres are spherical polystyrene particles with a nominal diameter of 90 μm and a solid content of 5%.

They are suitable for optical microscopy, particle analysis, large-pore filtration, fluid mechanics, sedimentation studies and microplastic research.

Product Overview

SPS90UM-10 provides a controlled 90 micron particle platform for laboratory research, analytical development and industrial testing.

The large particle size offers convenient optical visibility. The concentrated 5% suspension supports flexible dilution, repeated experiments, pilot projects and bulk supply.

Technical Specifications

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

Key Advantages

• Nominal particle diameter of 90 μm

• Regular spherical particle geometry

• Concentrated 5% solids

• Easy optical observation

• Convenient dilution and sampling

• Suitable for large-pore filtration studies

• Suitable for fluid-flow research

• Laboratory and bulk supply

• Flexible packaging options

• Customized specifications available

Applications of 90um Polystyrene Microspheres

Optical Microscopy

The 90 μm microspheres are readily visible under suitable optical microscopy conditions, supporting particle counting, tracking and morphology observation.

Particle Size Analysis

SPS90UM-10 can be evaluated as a model particle for particle-size measurement, comparative testing and analytical method development.

Large-Pore Filtration Testing

The particles are suitable for filter-retention, membrane challenge, particle recovery and large-pore filtration studies.

Fluid Mechanics Research

SPS90UM-10 can support flow visualization, particle transport, settling behavior and fluid–particle interaction research.

Microfluidic Device Testing

The microspheres may be evaluated for large-channel testing, particle transport, separation studies and device performance research.

Sedimentation Studies

The controlled particle diameter supports settling-rate, suspension-stability, aggregation and particle-recovery experiments.

Cleaning and Contamination Research

SPS90UM-10 may be used in cleaning-process development, contamination-recovery testing and surface inspection studies.

Microplastic Method Development

The particles can be evaluated as a defined polystyrene model for environmental sampling, separation, transport and recovery research.

Why Choose 90um Polystyrene Microspheres?

The 90 μm particle size combines convenient visual observation with controlled particle geometry.

Typical research areas include:

• Particle characterization

• Optical imaging

• Large-pore filtration

• Fluid-flow testing

• Particle transport

• Sedimentation analysis

• Cleaning validation research

• Microplastic method development

Benefits of 5% Solid Content

SPS90UM-10 is supplied at 5% solids for flexible laboratory and production use.

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

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

Standard Polystyrene Surface

SPS90UM-10 has a standard plain polystyrene surface without intentionally added fluorescent dyes or reactive 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.

Research Microspheres or Certified Size Standards?

SPS90UM-10 is positioned as a standard research-grade polystyrene microsphere.

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

Customers requiring certified particle-size standards should confirm:

• Actual mean particle diameter

• Particle-size tolerance

• Standard deviation

• Coefficient of variation

• Measurement method

• Calibration certificate

• Traceability documentation

Quality and Batch Documentation

Available 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:

• Wide particle-size selection

• Standard and functional surfaces

• Laboratory sample supply

• Pilot-scale manufacturing

• Bulk production capability

• Customized solid content

• Flexible packaging volumes

• OEM and private-label services

• Technical product-selection support

Customized Microsphere Supply

Customization options include:

• Particle diameter

• Particle-size tolerance

• Solid content

• Dispersion medium

• Surface functionalization

• Fluorescent labeling

• Colored particles

• Packaging volume

• OEM labeling

• Bulk production

Storage and Handling

Store SPS90UM-10 according to the product label, COA and SDS.

Particles of this size settle rapidly during storage. Thoroughly redisperse the suspension before sampling or dilution.

Do not collect material only from the upper layer of a settled suspension. Avoid drying, excessive heat, contamination and freezing unless otherwise specified.

Frequently Asked Questions

What is SPS90UM-10?

SPS90UM-10 is a standard polystyrene microsphere suspension with a nominal diameter of 90 μm and a solid content of 5%.

Is 90um equal to 90 microns?

Yes. A diameter of 90 μm, 90um or 90 microns is equal to 90,000 nm.

What are 90um polystyrene microspheres used for?

Typical applications include microscopy, particle analysis, large-pore filtration, fluid-flow research, sedimentation studies and microplastic method development.

Can the particles be observed with an optical microscope?

Yes. The 90 μm particle size provides convenient visibility under suitable optical microscopy conditions.

Do 90um microspheres settle during storage?

Yes. Particles of this size settle rapidly. Thoroughly redisperse the suspension before every sampling step.

Can SPS90UM-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 filtration testing?

SPS90UM-10 may be evaluated for filter retention, large-pore filtration, membrane challenge and particle-recovery studies.

Can it be used as a calibration standard?

It can support analytical method development and instrument-response evaluation. Certified calibration use requires corresponding particle-size and traceability documentation.

Are customized versions available?

Yes. SHBC can customize particle size, size tolerance, solid content, dispersion medium, surface properties and packaging volume.

Are bulk quantities available?

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

Request SPS90UM-10 Samples and Quotations

Contact Shanghai SanYu Biotechnology Co., Ltd. for SPS90UM-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.