70um Standard Polystyrene Microspheres SPS70UM-10 5%

70um Standard Polystyrene Microspheres SPS70UM-10

SHBC SPS70UM-10 Standard Polystyrene Microspheres are spherical polystyrene particles with a nominal diameter of 70 μm and a solid content of 5%.

They are suitable for particle analysis, optical microscopy, filtration testing, fluid-flow research, sedimentation studies and microplastic method development.

Product Overview

SPS70UM-10 provides a controlled 70 micron particle platform for laboratory research, analytical method development and industrial testing.

The large particle diameter offers convenient optical visibility. The 5% solids suspension supports flexible dilution, repeated experiments, pilot testing and bulk projects.

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 70 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 volumes

• Pilot and bulk production

• Customized specifications available

Applications of 70um Polystyrene Microspheres

Particle Size Analysis

SPS70UM-10 can be evaluated as a model particle for particle-size measurement, comparative testing and analytical method development.

Optical Microscopy

The 70 μm particles are readily visible under suitable optical microscopy conditions, supporting particle counting, tracking and morphology observation.

Particle Counter Evaluation

The particles may be used for instrument-response studies and counting-method development when the instrument aperture and fluid path are compatible with 70 μm particles.

Filtration and Membrane Testing

SPS70UM-10 is suitable for filter-retention, large-pore filtration, membrane-efficiency, challenge testing and particle-recovery studies.

Fluid Mechanics Research

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

Microfluidic Device Testing

SPS70UM-10 may be evaluated for channel testing, particle transport, separation studies and device performance research.

Sedimentation Studies

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

Cleaning and Contamination Studies

The particles may be used in cleaning-process development, contamination-recovery testing and surface inspection research.

Microplastic Research

SPS70UM-10 can be evaluated as a defined polystyrene particle model for environmental sampling, transport, separation and recovery-method development.

Why Choose 70um Polystyrene Microspheres?

The 70 μm diameter provides convenient microscopic visibility and controlled particle geometry.

Typical research areas include:

• Particle characterization

• Optical imaging

• Particle counting

• Filter evaluation

• Fluid-flow testing

• Microfluidic transport

• Sedimentation analysis

• Microplastic research

Benefits of 5% Solid Content

SPS70UM-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 projects and larger-volume requirements.

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

Standard Polystyrene Surface

SPS70UM-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.

Standard Microspheres or Certified Size Standards?

SPS70UM-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 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 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:

• 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

• Solid content

• Dispersion medium

• Surface functionalization

• Fluorescent labeling

• Colored particles

• Packaging volume

• OEM labeling

• Bulk production

Storage and Handling

Store SPS70UM-10 according to the product label, COA and SDS.

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

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

Frequently Asked Questions

What is SPS70UM-10?

SPS70UM-10 is a standard polystyrene microsphere suspension with a nominal diameter of 70 μm and a solid content of 5%.

Is 70um equal to 70 microns?

Yes. A diameter of 70 μm, 70um or 70 microns is equal to 70,000 nm.

What are 70um polystyrene microspheres used for?

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

Can the particles be observed with an optical microscope?

Yes. The 70 μm particle diameter provides convenient visibility under suitable optical microscopy conditions.

Do 70um microspheres settle during storage?

Yes. Particles of this size settle relatively quickly. Thoroughly redisperse the suspension before sampling.

Can SPS70UM-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?

SPS70UM-10 may be evaluated for filter retention, large-pore filtration, membrane challenge and particle-recovery studies.

Can it be used for particle-counter calibration?

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

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 SPS70UM-10 Samples and Quotations

Contact Shanghai SanYu Biotechnology Co., Ltd. for SPS70UM-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.