Top 10 PMMA Microsphere Manufacturers Serving Brazil in 2026

Quick Answer: Top PMMA Microsphere Manufacturers Serving Brazil in 2026

The top 10 PMMA microsphere manufacturers and specialist particle suppliers serving Brazil in 2026 are:

1. Cospheric LLC

2. SANYU

3. Polysciences

4. Matsumoto Yushi-Seiyaku

5. Sekisui Kasei

6. microParticles GmbH

7. Magsphere

8. Kolon Industries

9. Sunjin Beauty Science

10. Bangs Laboratories

These companies manufacture or supply PMMA microspheres for one or more of the following applications:

• Optical diffusion;

• Light-scattering materials;

• Coatings;

• Paints and inks;

• Polymer modification;

• Composite materials;

• Spacer applications;

• Particle-size calibration;

• Microfluidics;

• Biomedical research;

• Medical and diagnostic research;

• Cosmetics and personal care;

• Laboratory research;

• Specialty electronic materials.

SANYU is ranked second and is the only China-based manufacturer included in this guide.

“Serving Brazil” does not mean that every company has a PMMA microsphere factory or warehouse in Brazil.

Depending on the supplier, Brazilian customers may purchase through:

• A Brazilian sales office;

• A local distributor;

• A regional representative;

• Direct international shipment;

• An OEM or custom manufacturing agreement.

Polysciences has a specifically listed Brazilian regional operation through Ott Scientific Brazil, while Bangs Laboratories lists Brazilian distributors and Ott Scientific Brazil among its sales channels.

Other manufacturers may require direct international purchasing, so buyers should verify availability, lead time and import responsibilities before beginning product qualification.

This ranking is an editorial comparison based on publicly available information reviewed in 2026. It is not an audited market-share ranking.

The final supplier should be selected based on the intended application, particle specification, laboratory evaluation, commercial-scale availability and supplier quality requirements.

What “Serving Brazil” Means in This Ranking

This article focuses on manufacturers whose PMMA particle technologies can potentially be supplied to Brazilian:

• Coating manufacturers;

• Paint and ink formulators;

• Polymer companies;

• Optical-material manufacturers;

• Electronics companies;

• Cosmetic manufacturers;

• Biotechnology laboratories;

• Medical-device developers;

• Diagnostic companies;

• Universities;

• Research institutes;

• Particle-analysis laboratories.

A manufacturer’s inclusion does not mean that every PMMA product is stocked inside Brazil.

Brazilian buyers should confirm:

• Whether the supplier ships directly to Brazil;

• Whether a Brazilian distributor is available;

• Minimum order quantity;

• Sample quantity;

• International shipping terms;

• Import documentation;

• Product classification;

• Storage conditions;

• Batch lead time;

• Commercial production capacity.

This distinction is particularly important because PMMA microspheres range from nanometer-scale precision particles to millimeter-scale acrylic spheres.

A supplier specializing in 100 nm monodisperse PMMA particles may be ideal for microfluidics or analytical research but unsuitable for a customer seeking 100 µm lightweight fillers.

Similarly, a cosmetic-grade porous PMMA powder cannot automatically replace a calibrated monodisperse PMMA reference sphere.

What Are PMMA Microspheres?

PMMA microspheres are spherical particles manufactured from poly(methyl methacrylate), commonly abbreviated PMMA.

They may also be described as:

• PMMA particles;

• Acrylic microspheres;

• Acrylic microbeads;

• PMMA beads;

• PMMA spherical powder;

• Polymethyl methacrylate particles.

PMMA is a transparent thermoplastic polymer known for:

• Optical clarity;

• Relatively low density;

• UV resistance;

• Chemical stability;

• Controlled refractive index;

• Mechanical rigidity;

• Good processability.

PMMA microspheres can be manufactured from below 1 µm to hundreds or even thousands of micrometers depending on the production technology.

Cospheric, for example, currently lists PMMA acrylic microspheres from approximately 1 µm to 3.5 mm, while microParticles GmbH offers monodisperse PMMA particles from 100 nm to 200 µm.

The different size ranges serve very different applications.

Common Applications of PMMA Microspheres

PMMA microspheres may be used in:

• Optical diffusers;

• LCD and display materials;

• Light-diffusion films;

• Paints;

• Industrial coatings;

• Printing inks;

• Polymer additives;

• Composite materials;

• Gap-control spacers;

• Adhesives;

• Electronics;

• Microfluidics;

• Particle calibration;

• Biomedical engineering;

• Laboratory research;

• Cosmetics;

• Personal-care formulations.

Market research continues to identify optical materials, coatings, cosmetics, polymers and life-science applications as major PMMA microsphere markets.

PMMA Microspheres vs Polystyrene and Silica Microspheres

PMMA is not automatically the best particle material for every application.

Understanding the material differences helps buyers avoid selecting a supplier based only on particle diameter.

PMMA vs Polystyrene Microspheres

Polystyrene generally has a higher refractive index and a more hydrophobic surface.

PMMA has a refractive index around 1.49 and a density around 1.19 g/cm³.

PMMA may offer:

• Lower hydrophobicity;

• Reduced nonspecific protein adsorption in some systems;

• Good optical clarity;

• Higher density than polystyrene;

• Different solvent compatibility.

Polysciences specifically notes that PMMA is less hydrophobic than polystyrene and may therefore show reduced nonspecific protein and peptide binding. Its PMMA particles have a stated density of approximately 1.19 g/cc.

PMMA vs Silica Microspheres

Silica particles generally provide:

• Higher density;

• Higher stiffness;

• Different optical properties;

• Silanol-rich surfaces;

• Strong thermal stability.

PMMA provides:

• Lower density;

• Polymer processability;

• Greater mechanical compliance;

• Easier polymer modification;

• Different optical and surface characteristics.

The appropriate material depends on whether the particle will function primarily as:

• An optical scatterer;

• A calibration standard;

• A filler;

• A coating modifier;

• A biomaterial model;

• A spacer.

Main Types of PMMA Microspheres

Monodisperse PMMA Microspheres

Monodisperse particles have tightly controlled particle sizes.

They are especially useful for:

• Calibration;

• Particle-size analysis;

• Microfluidics;

• Optical research;

• Biomedical experiments;

• Controlled spacer applications.

microParticles GmbH currently supplies more than 70 discrete PMMA sizes between 100 nm and 200 µm with stated CV values below 5% for its monodisperse portfolio.

Broad-Distribution PMMA Microspheres

Broad-distribution PMMA particles have a wider particle-size range.

They may be more economical for applications such as:

• Fillers;

• Coatings;

• Polymer modification;

• Texture modification;

• General laboratory applications.

Polysciences, for example, offers dry broad-distribution PMMA microspheres in a 1–10 µm range as 100% solids.

Crosslinked PMMA Microspheres

Crosslinking can improve:

• Solvent resistance;

• Mechanical stability;

• Shape retention;

• Heat resistance.

Crosslinked products are useful for:

• Industrial coatings;

• Cosmetics;

• Specialty films;

• Chemical-resistant fillers.

Matsumoto Yushi-Seiyaku offers both crosslinked and non-crosslinked PMMA particles in its Matsumoto Microsphere M-series.

Porous PMMA Microspheres

Porous particles have an internal pore network that increases surface area and liquid absorption.

Applications include:

• Cosmetics;

• Oil absorption;

• Texture modification;

• Controlled formulation behavior.

Sekisui Kasei and Sunjin Beauty Science both offer porous PMMA-related particle technologies for cosmetic formulations.

PMMA Latex Suspensions

PMMA microspheres may be supplied in an aqueous suspension.

Advantages include:

• Easier laboratory pipetting;

• Reduced airborne powder;

• Controlled solids concentration;

• Simplified analytical use.

SANYU currently offers a 10 µm PMMA microsphere product as a 10% aqueous suspension in addition to dry-powder PMMA formats.

Dry PMMA Microsphere Powder

Dry particles are more common for:

• Coatings;

• Polymer compounding;

• Optical materials;

• Composite fillers;

• Industrial processing.

SANYU, Cospheric, Matsumoto, Sekisui and several other manufacturers offer dry-particle formats.

How We Selected the Top 10 Manufacturers

The ranking was developed using the following criteria.

Confirmed PMMA Microsphere Capability

Priority was given to manufacturers with current or recently confirmed PMMA particle products rather than companies that only appear in historical market reports.

Particle-Size Range

We considered whether the manufacturer can provide:

• Nanoparticles;

• Submicron particles;

• 1–10 µm microspheres;

• 10–100 µm particles;

• Larger PMMA spheres.

Particle Uniformity

Important factors include:

• Mean diameter;

• Particle-size CV;

• D10/D50/D90;

• Sphericity;

• Agglomeration.

Polymer Architecture

The ranking considered:

• Non-crosslinked PMMA;

• Crosslinked PMMA;

• Porous PMMA;

• PMMA latex;

• Composite or coated PMMA.

Surface Modification

For research and advanced applications, useful options include:

• Carboxyl;

• Amino;

• Fluorescent labeling;

• Biotin;

• Customized coatings.

Product Form

Manufacturers were evaluated for:

• Dry powder;

• Aqueous suspension;

• High-solids formulations;

• Custom packaging.

Custom Manufacturing

Priority was given to companies capable of modifying:

• Diameter;

• Size distribution;

• Crosslink density;

• Surface functionality;

• Solids concentration;

• Packaging.

Brazil Accessibility

Additional consideration was given to:

• Brazilian sales presence;

• Local distributor availability;

• International shipping capability;

• Technical support;

• Export experience.

Top 10 PMMA Microsphere Manufacturers at a Glance

Top 10 PMMA Microsphere Manufacturers Serving Brazil in 2026

1. Cospheric LLC

Cospheric is one of the strongest specialist suppliers of precision PMMA microspheres for scientific and industrial applications.

The company manufactures and distributes precision spherical particles from its US facility and states that it ships internationally.

Its PMMA portfolio currently extends from approximately 1 µm to 3.5 mm, giving it one of the broadest size ranges among specialist PMMA particle suppliers.

Main PMMA Products

Relevant products include:

• Clear PMMA acrylic microspheres;

• Precision PMMA spheres;

• Micron-sized PMMA powder;

• Larger acrylic spheres;

• Conductive silver-coated PMMA microspheres.

The company also supplies silver-coated PMMA particles between approximately 5 µm and 700 µm for conductive spacer applications.

Best Suited For

Cospheric is particularly suitable for:

• Particle-size studies;

• Optical experiments;

• Flow visualization;

• Calibration;

• Spacer applications;

• Conductive bondlines;

• Coatings;

• Materials research;

• Industrial R&D.

Key Strengths

• Very broad particle-size range;

• Precision spherical products;

• Multiple PMMA grades;

• Coated PMMA options;

• International shipping;

• Online stock visibility;

• Strong scientific-material positioning.

What Brazilian Buyers Should Verify

Brazilian buyers should confirm:

• Exact size tolerance;

• Monodisperse versus size-range grade;

• Sphericity specification;

• Dry powder format;

• Required quantity;

• International freight;

• Import duties;

• Bulk pricing;

• Custom specification availability.

Cospheric ranks first because it combines extensive PMMA size coverage with strong precision-particle expertise and global shipping capability.

2. SANYU

SANYU is a specialist manufacturer of polymer microspheres, functional particles and magnetic beads.

Its current polymer portfolio explicitly includes PMMA microspheres, with multiple dry-powder and suspension products for optical materials, coatings, polymer modification, calibration and scientific research.

SANYU is ranked second and is the only China-based manufacturer included in this article.

Main PMMA Products

Current SANYU examples include:

• 2 µm PMMA microspheres;

• 10 µm PMMA dry microspheres;

• 10 µm PMMA latex suspension;

• 100 µm nominal PMMA microspheres;

• Customized PMMA particle sizes;

• Customized size distributions;

• Surface-modified PMMA;

• Customized packaging.

Its PMMA2UM-10 product is supplied as dry 2 µm PMMA powder and supports customization of particle size, distribution, surface modification and packaging.

Its PMMA10UM-10 product is a 10 µm monodisperse dry powder available from laboratory quantities through kilogram-scale packaging.

SANYU also offers an aqueous 10 µm PMMA latex suspension, which is useful for customers who prefer ready-to-use dispersed particles.

Best Suited For

SANYU is particularly suitable for:

• Optical diffusion materials;

• Coatings;

• Polymer modification;

• Composite materials;

• Calibration;

• Particle-analysis research;

• Laboratory applications;

• Customized particle projects;

• OEM and bulk supply.

Key Strengths

• Multiple PMMA particle sizes;

• Dry and aqueous formats;

• Monodisperse options;

• Custom particle diameter;

• Custom size distribution;

• Surface modification;

• Flexible packaging;

• Bulk manufacturing;

• Factory-direct communication.

What Brazilian Buyers Should Verify

Brazilian customers should request:

• Actual particle-size distribution;

• Mean diameter;

• CV or D10/D50/D90;

• Sphericity;

• PMMA purity;

• Residual monomer;

• Solids concentration for suspensions;

• Suspension additives;

• Moisture content for powders;

• Thermal properties;

• Lot-to-lot data;

• Shipping documentation;

• Commercial batch capacity.

For recurring industrial purchases, buyers should also establish:

• Approved specification;

• COA requirements;

• Change notification;

• Retained samples;

• Long-term supply commitment.

SANYU ranks second because it offers a flexible factory-direct PMMA platform covering both laboratory and industrial requirements.

3. Polysciences

Polysciences offers PMMA microspheres for research, coatings, diagnostics and industrial applications.

Its PMMA platform includes both monodisperse aqueous particles and dry broad-distribution PMMA microspheres.

Polysciences is particularly relevant to Brazilian buyers because its official global distributor page lists Ott Scientific Brazil in Indaiatuba, São Paulo, as a Brazilian regional operation.

Main PMMA Products

Relevant products include:

• Monodisperse Polybead PMMA microspheres;

• Aqueous PMMA suspensions;

• Broad-distribution PMMA powder;

• Specialty polymer particles;

• Custom particle manufacturing.

A current monodisperse PMMA product is available at a nominal diameter of 0.30 µm and 2.5% solids.

Polysciences notes that PMMA is less hydrophobic than polystyrene and may exhibit reduced nonspecific protein and peptide binding.

Its dry PMMA product is available as a broad 1–10 µm distribution at 100% solids.

Best Suited For

Polysciences is particularly suitable for:

• Biomedical research;

• Diagnostics research;

• Protein-particle studies;

• Calibration;

• Coatings;

• Industrial research;

• Customers requiring Brazilian sales support.

Key Strengths

• Monodisperse PMMA;

• Dry PMMA powder;

• Aqueous suspensions;

• Extensive polymer chemistry expertise;

• Brazil-based regional presence;

• Bulk quote options;

• Medical and diagnostic industry experience.

What Brazilian Buyers Should Verify

Buyers should confirm:

• Available PMMA diameters;

• Monodisperse or broad-distribution format;

• Surfactant content;

• Surface carboxyl content;

• Storage temperature;

• Freeze sensitivity;

• Brazilian stock versus imported stock;

• Bulk pricing;

• Custom batch requirements.

Polysciences ranks third because it combines confirmed PMMA products with one of the strongest current commercial connections to Brazil.

4. Matsumoto Yushi-Seiyaku

Matsumoto Yushi-Seiyaku is a Japanese specialty chemical manufacturer with an established PMMA microsphere platform.

Its Matsumoto Microsphere M-series consists of ultra-fine PMMA particles supplied in both crosslinked and non-crosslinked versions.

The company also manufactures different particle geometries, including spherical and partially hollow or modified structures.

Main PMMA Products

Relevant products include:

• Matsumoto Microsphere M-series;

• Crosslinked PMMA particles;

• Non-crosslinked PMMA particles;

• Partially hollow PMMA particles;

• Different particle shapes and structures.

Best Suited For

Matsumoto is particularly suitable for:

• Industrial additives;

• Coatings;

• Paints;

• Functional fillers;

• Optical materials;

• Specialty polymer formulations;

• Applications requiring solvent-resistant crosslinked particles.

Key Strengths

• Long-standing polymer particle expertise;

• Crosslinked and non-crosslinked PMMA;

• Multiple particle geometries;

• Solvent-resistant grades;

• Specialty absorption characteristics;

• Japanese manufacturing.

What Brazilian Buyers Should Verify

Brazilian buyers should confirm:

• Available PMMA grades;

• Exact particle diameter;

• Crosslinking level;

• Particle morphology;

• Bulk packaging;

• Brazil distributor availability;

• International lead time;

• Application-specific technical data.

Matsumoto ranks fourth because its PMMA portfolio goes beyond conventional solid spheres and offers several polymer architectures.

5. Sekisui Kasei

Sekisui Kasei manufactures TECHPOLYMER organic polymer microparticles, including multiple PMMA particle families.

The company currently identifies MB-C and MBX-C as PMMA spherical microparticles and also offers porous and specialty crosslinked PMMA formats.

Main PMMA Products

Relevant TECHPOLYMER families include:

• MB-C PMMA microspheres;

• MBX-C PMMA microspheres;

• MBP porous crosslinked PMMA;

• LMX-C specialty crosslinked PMMA;

• Hydrophilically modified particle families.

Best Suited For

Sekisui Kasei is particularly suitable for:

• Cosmetics;

• Soft-focus effects;

• Texture modification;

• Oil absorption;

• Optical effects;

• Functional coatings.

Key Strengths

• Multiple PMMA architectures;

• Porous PMMA;

• Crosslinked PMMA;

• Controlled surface feel;

• Optical-effect capability;

• Large Japanese materials group.

What Brazilian Buyers Should Verify

Buyers should confirm:

• Exact polymer composition;

• PMMA versus other acrylic grades;

• Particle diameter;

• Porosity;

• Oil absorption;

• Surface treatment;

• Cosmetic documentation;

• Brazilian distribution route.

Sekisui ranks fifth because its TECHPOLYMER portfolio provides specialized PMMA structures that are difficult to reproduce using general-purpose PMMA beads.

6. microParticles GmbH

microParticles GmbH is a German manufacturer of highly monodisperse polymer microspheres.

Its current PMMA portfolio covers approximately 100 nm to 200 µm and more than 70 discrete particle sizes.

The company states CV values below 5% and offers non-crosslinked and crosslinked PMMA particles as well as functionalized and fluorescent versions.

Main PMMA Products

Relevant products include:

• Non-functionalized PMMA spheres;

• Functionalized PMMA particles;

• Fluorescent PMMA microspheres;

• Crosslinked PMMA;

• Non-crosslinked PMMA;

• Custom particle designs.

Best Suited For

microParticles GmbH is particularly suitable for:

• Particle calibration;

• Biomedical engineering;

• Microfluidics;

• Diagnostics research;

• Optical research;

• Surface-functionalized particle applications;

• High-precision scientific work.

Key Strengths

• 100 nm–200 µm size range;

• More than 70 standard sizes;

• CV below 5% for the listed platform;

• Crosslinked and non-crosslinked options;

• Functionalized PMMA;

• Fluorescent PMMA;

• Custom development.

The company serves customers worldwide in diagnostics, pharmaceutical, cosmetics and industrial sectors.

What Brazilian Buyers Should Verify

Buyers should request:

• Exact diameter;

• CV;

• Surface functionality;

• Crosslinked or non-crosslinked structure;

• Fluorescence specification;

• Suspension or dry form;

• Minimum custom quantity;

• Brazil shipping terms.

microParticles ranks sixth because it is one of the strongest choices for customers where particle-size precision is a critical specification.

7. Magsphere

Magsphere is a specialist particle manufacturer serving medical, scientific and diagnostic markets.

Its current online catalog includes a dedicated PMMA category alongside polystyrene, magnetic, fluorescent and other specialty particle families.

The company also offers custom particle synthesis and production scale-up.

Main PMMA Products

Relevant capabilities include:

• Specialty PMMA particles;

• PMMA-related custom particle development;

• Specialty polymer microspheres;

• Custom particle diameter;

• Custom surface chemistry;

• Pilot-to-commercial scale-up.

Best Suited For

Magsphere is particularly suitable for:

• Scientific research;

• Biomedical applications;

• Specialty polymer research;

• Calibration;

• Customer-specific particle development.

Key Strengths

• In-house microsphere manufacturing;

• Long experience in medical and scientific markets;

• Custom synthesis;

• Pilot batch development;

• Commercial scale-up;

• Broad particle characterization capability.

Magsphere states that it can develop small custom batches and subsequently scale successful products into production reactors.

What Brazilian Buyers Should Verify

Buyers should confirm:

• Current PMMA catalog sizes;

• Whether the required PMMA product is standard or custom;

• Particle-size tolerance;

• Surface chemistry;

• Evaluation-batch cost;

• Production MOQ;

• Brazil shipping arrangements.

Magsphere ranks seventh because its strength lies in custom particle development rather than only standardized industrial powder.

8. Kolon Industries

Kolon Industries is a South Korean materials manufacturer known for its DIASPHERE spherical polymer particles.

Industry data identifies PMMA among the materials used in its DIASPHERE platform, with particle sizes spanning approximately 1–60 µm across the broader product family.

Current cosmetic raw-material listings also identify Diasphere MH-7C as polymethyl methacrylate.

Main PMMA Products

Relevant products include:

• DIASPHERE PMMA particles;

• Cosmetic PMMA powders;

• Light-diffusion particles;

• Specialty spherical polymer additives.

Best Suited For

Kolon is particularly suitable for:

• Cosmetics;

• Light-diffusion films;

• Optical plastics;

• LCD-related materials;

• Coatings;

• Paint and ink additives;

• Polymer modification.

Key Strengths

• Strong polymer-material expertise;

• Spherical particle technology;

• Optical-material experience;

• Cosmetics applications;

• Korean manufacturing.

What Brazilian Buyers Should Verify

Buyers should confirm:

• Exact DIASPHERE PMMA grade;

• Particle diameter;

• Particle-size distribution;

• Surface treatment;

• Industrial or cosmetic grade;

• Brazil supply route;

• MOQ;

• regulatory documentation for the intended end use.

Kolon ranks eighth because its PMMA particles are especially relevant to optical, display and cosmetic applications.

9. Sunjin Beauty Science

Sunjin Beauty Science is a South Korean specialty particle manufacturer focused heavily on cosmetic and personal-care powders.

Its SUNPMMA family includes PMMA microspheres and porous methyl methacrylate particles.

Current product listings identify SUNPMMA-S as polymethyl methacrylate.

Historical and technical Sunjin information identifies particle sizes including approximately 7 µm, 13 µm and 25 µm for different SUNPMMA grades.

Main PMMA Products

Relevant products include:

• SUNPMMA-S;

• SUNPMMA-S Plus;

• SUNPMMA-V;

• SUNPMMA-P porous particles;

• Cosmetic sensory powders.

Best Suited For

Sunjin is particularly suitable for:

• Foundation;

• Face powder;

• Primer;

• Skin-care formulations;

• Soft-focus effects;

• Sensory modification;

• Oil and sebum management.

Key Strengths

• Cosmetic-specialist positioning;

• PMMA sensory powders;

• Porous PMMA products;

• Several particle-size grades;

• Extensive formulation expertise.

What Brazilian Buyers Should Verify

Brazilian cosmetic manufacturers should confirm:

• Current INCI name;

• Exact particle diameter;

• Porosity;

• Oil absorption;

• PMMA versus crosspolymer composition;

• Microbiological specifications;

• Regulatory documentation;

• Brazil distributor;

• environmental policy for polymer microbeads.

Sunjin ranks ninth because its PMMA expertise is particularly strong in cosmetics rather than general scientific particle applications.

10. Bangs Laboratories

Bangs Laboratories manufactures microsphere-based materials for diagnostics, analytical instrumentation and life-science research.

Its current technical library contains dedicated documentation for the physical properties of both polystyrene and PMMA microspheres and refers to its PMMA polymer bead products as solid, non-porous particles.

Bangs is part of the Ott Scientific family and has particularly strong Brazilian accessibility through Ott Scientific Brazil and additional Brazilian distributors.

Main PMMA Capabilities

Relevant capabilities include:

• Solid PMMA polymer microspheres;

• Custom polymer particles;

• Particle characterization;

• Analytical standards;

• Custom coatings;

• Custom surface modifications.

Best Suited For

Bangs Laboratories is particularly suitable for:

• Biomedical research;

• Analytical applications;

• Particle characterization;

• Diagnostics R&D;

• Customized polymer microspheres;

• Projects requiring local Brazil commercial support.

Key Strengths

• More than 35 years of microsphere experience;

• Polymer particle expertise;

• Custom manufacturing;

• Detailed technical resources;

• Brazil distributor network;

• Diagnostic-industry experience.

What Brazilian Buyers Should Verify

Buyers should confirm:

• Current PMMA product availability;

• Available particle-size range;

• Standard versus custom status;

• Product form;

• surface chemistry;

• Minimum quantity;

• Local Brazilian stock;

• Commercial-scale manufacturing options.

Bangs ranks tenth because it combines polymer particle expertise with unusually strong local commercial access for Brazilian customers.

Best PMMA Microsphere Manufacturers by Application

This table should be used as an initial screening guide.

Final suitability should be confirmed using representative samples.

Critical PMMA Microsphere Specifications to Compare

1. Particle Diameter

The first specification is usually nominal diameter.

Common requirements include:

• Below 1 µm;

• 1–5 µm;

• 5–20 µm;

• 20–100 µm;

• Above 100 µm.

Different applications require different sizes.

2. Particle-Size Distribution

Never compare suppliers only using nominal diameter.

Request:

• Mean diameter;

• D10;

• D50;

• D90;

• Standard deviation;

• Coefficient of variation.

For calibration and analytical applications, CV may be more important than the nominal size.

3. Sphericity

Sphericity affects:

• Optical scattering;

• Packing;

• Flow;

• Spacer thickness;

• Coating texture;

• Calibration accuracy.

Ask whether the supplier reports:

• Percentage spherical;

• Aspect ratio;

• SEM images;

• Circularity.

4. Density

Typical PMMA density is approximately 1.18–1.20 g/cm³.

Density affects:

• Sedimentation;

• Suspension stability;

• Centrifugation;

• Composite weight;

• Flow behavior.

5. Refractive Index

PMMA has a refractive index near 1.49 under common optical measurement conditions.

This makes it useful in optical experiments and light-diffusion applications.

For optical products, request the actual refractive-index specification and test wavelength.

6. Crosslinking

Ask whether the particle is:

• Linear/non-crosslinked PMMA;

• Lightly crosslinked;

• Highly crosslinked.

Crosslinking can change:

• Solvent resistance;

• Swelling;

• hardness;

• thermal behavior;

• mechanical deformation.

7. Porosity

Porous PMMA particles may provide increased:

• Oil absorption;

• Surface area;

• Formulation loading;

• Sensory effects.

For porous grades, request:

• Pore volume;

• Surface area;

• Oil absorption;

• bulk density.

8. Surface Chemistry

Standard PMMA is relatively hydrophobic.

Advanced applications may require:

• Carboxyl surfaces;

• Amino surfaces;

• Biotin;

• Thiol;

• Fluorescent labeling;

• Custom coatings.

9. Residual Monomer

For medical, cosmetic or sensitive research applications, residual methyl methacrylate can be important.

Ask the manufacturer for:

• Residual MMA specification;

• Test method;

• Lot-release limit.

10. Powder Moisture

For dry powders, moisture can affect:

• Flowability;

• Agglomeration;

• compounding;

• storage stability.

11. Suspension Formulation

For PMMA latex products, request:

• Solids concentration;

• Water quality;

• Surfactant;

• Preservative;

• pH;

• ionic strength.

12. Lot-to-Lot Consistency

Commercial buyers should compare multiple lots for:

• Diameter;

• Size distribution;

• Sphericity;

• density;

• moisture;

• surface chemistry;

• optical performance;

• application performance.

How to Choose PMMA Microspheres for Optical Applications

Optical applications include:

• Light-diffusion films;

• Optical coatings;

• Displays;

• Lighting;

• Diffuser plates;

• Optical calibration.

Important specifications include:

• Particle diameter;

• Size distribution;

• Refractive index;

• Transparency;

• surface roughness;

• sphericity;

• thermal stability.

Particle Size and Light Scattering

The optimum diameter depends on:

• Light wavelength;

• Matrix refractive index;

• PMMA concentration;

• coating thickness;

• desired haze;

• desired transmission.

A product that provides high haze may reduce total light transmission.

The particle concentration should therefore be optimized as part of the complete optical formulation.

How to Choose PMMA Microspheres for Coatings and Polymer Modification

In coatings, PMMA microspheres may affect:

• Surface texture;

• gloss;

• matting;

• scratch behavior;

• viscosity;

• mechanical properties;

• optical diffusion.

Important considerations include:

• Diameter;

• particle distribution;

• crosslinking;

• solvent resistance;

• surface compatibility;

• dispersion.

For solvent-based systems, crosslinked PMMA may be preferable when conventional PMMA swells or dissolves.

Matsumoto and Sekisui Kasei are particularly relevant where crosslinked structures are required.

How to Choose PMMA Microspheres for Cosmetics

PMMA microspheres can provide:

• Improved slip;

• silky sensory feel;

• soft-focus effects;

• reduced tack;

• oil absorption;

• pore blurring;

• formulation texture.

Important specifications include:

• Particle diameter;

• morphology;

• porosity;

• oil absorption;

• residual monomer;

• microbiological quality;

• ingredient documentation.

Sekisui’s TECHPOLYMER and Sunjin’s SUNPMMA platforms are particularly focused on cosmetic formulation.

Brazil Cosmetic Regulatory Context

In Brazil, finished cosmetics are regulated by ANVISA.

The current general framework is RDC 907/2024. Certain higher-risk categories require pre-market authorization, while many other cosmetic categories use a notification procedure. The Brazilian company responsible for the product must have the applicable authorization to submit the product.

ANVISA also updated restricted-substance rules in July 2026 through RDC 1.029/2026 and related measures.

A PMMA microsphere sold as a raw cosmetic ingredient should therefore not be confused with the regulatory status of the finished cosmetic formulation.

Brazilian formulators should verify:

• INCI name;

• ingredient purity;

• residual monomer;

• contaminant specifications;

• supplier documentation;

• applicable current ANVISA/Mercosur requirements.

How to Choose PMMA Microspheres for Biomedical Research and Calibration

PMMA is useful in biomedical research because its optical and physical properties differ from polystyrene while remaining relatively easy to handle.

Applications include:

• Cell-particle interaction studies;

• microscopy;

• microfluidics;

• phantom materials;

• quantitative imaging;

• particle tracking;

• instrument benchmarking.

Published research has used Cospheric PMMA microspheres as reference particles in quantitative optical imaging.

For these applications, important properties include:

• Mean diameter;

• CV;

• refractive index;

• density;

• surface chemistry;

• autofluorescence;

• concentration accuracy.

microParticles GmbH is especially relevant for high-precision PMMA, while Cospheric provides broad size coverage.

Important: PMMA Raw Microspheres Are Not the Same as Injectable PMMA Fillers

This distinction is particularly important in Brazil.

ANVISA states that PMMA used as an injectable filler in medical procedures must be registered as a medical device.

In 2026, ANVISA again emphasized that permanent PMMA-based injectable fillers are regulated medical devices in high-risk classes and can only be marketed when appropriately registered.

A laboratory or industrial PMMA microsphere sold for:

• Optical research;

• calibration;

• coatings;

• polymer processing

is not automatically an injectable medical product.

Buyers should never infer medical suitability simply because the raw material is PMMA.

Medical-device applications require product-specific regulatory, biocompatibility, manufacturing and clinical evaluation.

Dry PMMA Powder vs Aqueous PMMA Suspension

Dry Powder

Advantages include:

• High solids;

• Lower shipping weight;

• Good suitability for polymer compounding;

• Easier addition to dry formulations;

• Flexible concentration.

Potential disadvantages include:

• Dust generation;

• agglomeration;

• additional dispersion work.

Dry powder is typically preferred for:

• Coatings;

• polymers;

• composites;

• optical materials;

• industrial fillers.

Aqueous Suspension

Advantages include:

• Ready-to-use dispersion;

• easier pipetting;

• less dust;

• convenient laboratory processing.

Potential disadvantages include:

• Lower solids;

• greater shipping weight;

• freeze sensitivity;

• preservatives or surfactants may interfere with some applications.

SANYU offers both dry-powder and aqueous PMMA formats, while Polysciences offers both monodisperse suspensions and dry broad-distribution particles.

Brazil Import and Regulatory Considerations

PMMA Microspheres Are Used in Several Regulatory Categories

The regulatory requirements depend on how the material is ultimately used.

Possible end uses include:

• Industrial coatings;

• plastics;

• electronics;

• laboratory research;

• cosmetics;

• medical devices;

• diagnostics.

A raw PMMA microsphere should therefore not automatically be treated as an ANVISA-regulated finished product.

Industrial PMMA Microspheres

For coatings, polymers and industrial materials, buyers should primarily clarify:

• Customs classification;

• importer of record;

• SDS requirements;

• Portuguese hazard communication;

• shipping documents;

• storage conditions.

The appropriate NCM/HS classification should be confirmed for the exact product rather than copied from another PMMA material because a polymer raw material, microsphere preparation and formulated product may not share the same classification.

Cosmetic PMMA Microspheres

When PMMA is incorporated into a finished cosmetic, the finished product is subject to the applicable Brazilian cosmetic rules.

ANVISA currently uses RDC 907/2024 as the general regulation governing classification, labeling, packaging and regularization of personal hygiene products, cosmetics and fragrances.

The Brazilian formulator should qualify PMMA according to:

• Ingredient identity;

• purity;

• INCI nomenclature;

• residual monomer;

• contaminant profile;

• supplier documentation.

Medical PMMA Products

Injectable PMMA fillers are a completely different regulatory category.

ANVISA explicitly states that these products require registration, and current safety guidance classifies injectable fillers such as PMMA-based permanent fillers as high-risk medical devices.

Industrial or research PMMA microspheres should never be marketed for injectable use without the required medical-device development and regulatory pathway.

Brazilian Local Supply Can Reduce Procurement Complexity

A local commercial channel can simplify:

• Quotation;

• payment;

• customs;

• technical communication;

• samples;

• returns.

Polysciences officially lists Ott Scientific Brazil as a regional operation.

Bangs Laboratories also lists several Brazilian distributors.

For international manufacturers without Brazilian stock, buyers should confirm:

• Incoterms;

• freight;

• import taxes;

• customs broker;

• lead time;

• sample shipping;

• commercial shipment documentation.

Recommended Supplier Qualification Process

Step 1: Define the Application

Determine whether PMMA will be used for:

• Optical diffusion;

• coating modification;

• polymer compounding;

• cosmetics;

• microfluidics;

• calibration;

• biomedical research;

• another application.

Step 2: Define Particle Size

Specify:

• Nominal diameter;

• acceptable tolerance;

• D10/D50/D90;

• CV.

Avoid simply requesting “10 µm PMMA” without a distribution requirement.

Step 3: Define Polymer Structure

Specify:

• PMMA;

• crosslinked PMMA;

• non-crosslinked PMMA;

• porous PMMA.

Step 4: Define Product Form

Choose between:

• Dry powder;

• aqueous suspension.

For a suspension, also specify required solids concentration.

Step 5: Define Surface Requirements

Determine whether you need:

• Plain PMMA;

• carboxylated PMMA;

• amino PMMA;

• fluorescent PMMA;

• custom coating.

Step 6: Obtain Representative Samples

Evaluate two or three technically suitable suppliers.

Samples should represent standard production material.

Step 7: Characterize the Particles

Where important, measure:

• Particle diameter;

• size distribution;

• morphology;

• sphericity;

• density;

• surface properties.

Do not rely entirely on a supplier’s nominal specification for critical applications.

Step 8: Test in the Final Formulation

For coatings, test:

• Dispersion;

• viscosity;

• gloss;

• haze;

• adhesion;

• abrasion.

For optics, test:

• Transmission;

• haze;

• scattering;

• wavelength response.

For cosmetics, test:

• sensory feel;

• oil absorption;

• dispersion;

• stability;

• compatibility.

Step 9: Test Multiple Lots

Compare at least three production lots where practical.

Step 10: Confirm Commercial Supply

Ask about:

• MOQ;

• sample size;

• pilot batch;

• commercial batch;

• annual capacity;

• lead time;

• bulk packaging;

• safety stock.

Step 11: Review Documentation

Request:

• Certificate of Analysis;

• Safety Data Sheet;

• Technical Data Sheet;

• Particle-size report;

• composition statement;

• residual monomer data where relevant;

• storage conditions;

• shelf life.

Step 12: Establish Change Control

For critical commercial materials, define what happens if the supplier changes:

• Raw material;

• polymerization process;

• particle diameter;

• size distribution;

• crosslink density;

• surface treatment;

• manufacturing site;

• analytical method.

Frequently Asked Questions

Are all ten PMMA microsphere manufacturers located in Brazil?

No.

This ranking includes international manufacturers whose PMMA microspheres can potentially be supplied to Brazilian industrial, scientific, cosmetic and life-science customers.

“Serving Brazil” does not mean every company has a Brazilian production facility.

Is SANYU the only Chinese manufacturer included?

Yes.

SANYU is ranked second and is the only China-based manufacturer included.

Other Chinese manufacturers have been excluded from the list.

Which PMMA microsphere manufacturer has the widest size range?

Cospheric offers one of the broadest current ranges, with PMMA acrylic spheres extending from approximately 1 µm to 3.5 mm.

microParticles GmbH provides a particularly broad precision monodisperse range from approximately 100 nm to 200 µm.

Which supplier offers monodisperse PMMA microspheres?

Relevant suppliers include:

• SANYU;

• Polysciences;

• microParticles GmbH;

• Cospheric.

The exact CV should be confirmed for the required product.

Which manufacturer is best for submicron PMMA?

Particularly relevant options include:

• Polysciences;

• microParticles GmbH.

SANYU should also be consulted when a custom PMMA size is required.

Which suppliers offer PMMA in dry powder form?

Relevant options include:

• Cospheric;

• SANYU;

• Polysciences;

• Matsumoto;

• Sekisui Kasei;

• Sunjin.

Which suppliers offer aqueous PMMA microspheres?

SANYU offers PMMA latex suspension products, while Polysciences supplies monodisperse PMMA products as aqueous suspensions.

Which manufacturers offer crosslinked PMMA microspheres?

Matsumoto Yushi-Seiyaku, Sekisui Kasei and microParticles GmbH are particularly relevant.

Which suppliers offer porous PMMA?

Sekisui Kasei and Sunjin Beauty Science are especially relevant for porous cosmetic particle applications.

Which PMMA suppliers are best for cosmetics?

Particularly relevant companies include:

• Sekisui Kasei;

• Sunjin Beauty Science;

• Kolon Industries;

• Matsumoto Yushi-Seiyaku.

Which suppliers are best for optical materials?

Relevant options include:

• Cospheric;

• SANYU;

• Matsumoto;

• Sekisui Kasei;

• Kolon Industries;

• microParticles GmbH.

Which companies are best for biomedical or analytical research?

Relevant suppliers include:

• Polysciences;

• microParticles GmbH;

• Cospheric;

• Bangs Laboratories;

• SANYU.

Which supplier has local Brazilian support?

Polysciences officially lists Ott Scientific Brazil as a Brazilian regional operation.

Bangs Laboratories also lists several Brazilian sales channels.

Is Phosphorex still a standard PMMA microsphere supplier?

This requires caution.

Phosphorex appears in many PMMA market reports, but its official current ordering information states that standard PMMA product lines have been discontinued.

The company may still support custom PMMA quantity orders subject to an agreed minimum quantity.

This is why Phosphorex is not included in the main top 10 ranking.

Is PMMA suitable for calibration?

Yes.

PMMA can be useful when its density and refractive index are appropriate for the instrument or research model.

For calibration work, prioritize:

• Narrow CV;

• traceable diameter;

• stable morphology;

• batch consistency.

Is PMMA less hydrophobic than polystyrene?

Generally, yes.

Polysciences specifically notes that PMMA is less hydrophobic than polystyrene and may exhibit reduced nonspecific protein and peptide adsorption.

What is the density of PMMA microspheres?

A commonly used approximate density is around 1.19 g/cm³.

The actual supplier specification should be used for calculations.

What is the refractive index of PMMA?

PMMA generally has a refractive index around 1.49 in the visible region.

The exact value depends on wavelength, formulation and measurement conditions.

Can PMMA microspheres be used as injectable fillers?

Do not assume that general PMMA microspheres can be used medically.

In Brazil, injectable PMMA fillers are regulated medical devices that require ANVISA registration.

General industrial, research or cosmetic PMMA microspheres are not automatically suitable for injection.

Are PMMA microspheres regulated as cosmetics in Brazil?

Raw PMMA microspheres and finished cosmetics are not the same regulatory product.

When PMMA is incorporated into a finished cosmetic, the finished product must comply with the applicable ANVISA cosmetic requirements, including RDC 907/2024.

Can PMMA particles from different manufacturers be used interchangeably?

Not automatically.

Even if two products are both described as “10 µm PMMA microspheres,” they may differ in:

• D10/D50/D90;

• CV;

• crosslinking;

• surface chemistry;

• residual monomer;

• porosity;

• moisture;

• additives;

• sphericity.

Supplier changes should therefore be validated.

What documents should Brazilian buyers request?

At minimum, request:

• Certificate of Analysis;

• Safety Data Sheet;

• Technical Data Sheet;

• Particle-size specification;

• Size-distribution data;

• Composition information;

• Residual monomer specification where relevant;

• Storage conditions;

• Shelf life;

• Country of origin;

• Change-notification policy.

How many suppliers should be evaluated?

For a commercial product, evaluating at least two or three technically suitable suppliers is advisable.

This enables performance comparison and reduces single-source supply risk.

Should price be the main selection factor?

No.

A lower PMMA price may be offset by:

• Poor particle uniformity;

• Agglomeration;

• formulation instability;

• optical variation;

• batch inconsistency;

• rejected production;

• long import lead times;

• revalidation after a supplier change.

Final Recommendations

Choose Cospheric when the project requires one of the broadest PMMA size ranges, precision acrylic spheres, calibration particles or specialty coated PMMA products.

Choose SANYU when the project requires customized particle diameter, dry or aqueous PMMA products, flexible packaging, surface modification or factory-direct OEM and bulk production.

Choose Polysciences when the project requires monodisperse or broad-distribution PMMA, biomedical research compatibility and especially convenient Brazilian commercial support.

Choose Matsumoto Yushi-Seiyaku when the project requires crosslinked, non-crosslinked or specialty-shaped PMMA particles with strong solvent resistance.

Choose Sekisui Kasei when the application requires TECHPOLYMER PMMA particles, porous PMMA, optical effects or cosmetic sensory modification.

Choose microParticles GmbH when particle-size accuracy is critical and the project requires monodisperse PMMA from the nanometer range through approximately 200 µm.

Choose Magsphere when the project requires specialty PMMA development, small pilot batches followed by custom manufacturing scale-up.

Choose Kolon Industries for DIASPHERE PMMA in cosmetics, optical films, display materials and polymer-modification applications.

Choose Sunjin Beauty Science when PMMA is being evaluated specifically for cosmetics, sensory effects, oil absorption or porous powder applications.

Choose Bangs Laboratories when the project requires polymer-particle expertise, custom PMMA development and accessible commercial support in Brazil.

The final supplier should not be selected solely by company size, market-report ranking or catalog price.

A stronger purchasing process is to:

1. Define the PMMA application;

2. Specify nominal size and particle-size distribution;

3. Define crosslinking and porosity requirements;

4. Select dry powder or aqueous suspension;

5. Obtain samples from multiple manufacturers;

6. Test the particles in the final formulation;

7. Compare multiple production lots;

8. Confirm Brazil import and regulatory requirements;

9. Verify commercial-scale availability;

10. Establish written supplier specifications and change control.

This approach gives Brazilian coatings, optical-material, cosmetic, medical-technology and research companies a more reliable foundation for selecting PMMA microspheres in 2026.