Shop All Microspheres

Dyed Red Aqueous Fluorescent Particles (Thermo Scientific™)

Improve sensitivity and detectability for analytical methods with microsphere suspensions that are internally dyed and feature bright, high-contrast colors.

5000 Series 0.03μm to 0.30μm Polymer Particle Suspensions (Thermo Scientific™)

Optimize research in light scattering, microporous filter checking, and aerosol particle generation with these particle suspensions.

7000 Series Copolymer Microsphere Suspensions (Thermo Scientific™)

Meet the need for particulate materials with a variety of particle sizes and properties with Thermo Scientific™ 7000 Series Copolymer Microsphere Suspensions.

3000 Series Nanosphere™ Size Standards (Thermo Scientific™)

Conveniently check the sizes of bacteria, viruses, ribosomes and sub-cellular components with these size standards.

9000 Series Glass Particle Standards (Thermo Scientific™)

Replace polystyrene spheres in many applications with dry glass NIST™-traceable size standards.

Cyto-Plex™ Carboxylated Particles (Thermo Scientific™)

Save time when measuring analytes with Thermo Scientific™ Cyto-Plex™ Carboxylated Particles, open platform particles for suspension array analysis.

3K/4K Series Particle Counter Standards (Thermo Scientific™)

Ensure accurate and convenient calibration of laser particle counters with Thermo Scientific™ 3K/4K Series Particle Counter Standards.

Sulfate Latex Beads, 8% w/v, 0.5 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

These sulfate latex microspheres are stabilized by sulfate charges. In some cases, hydroxyl and carboxyl groups are also present in small amounts bound to the polymer chains. The pKa of the sulfate group is <2 and consequently the particles are stable in acidic media. Suspensions of the particles are stable up to almost 0.30 M univalent electrolyte concentrations and therefore may be used in media of physiological ionic strength. However they are hydrophobic particles and will undergo aggregation in the presence of low concentrations of divalent or trivalent cations unless stabilized by a hydrophilic coating. Sulfate latex is suitable for calibration of particle size analysis equipment and are also appropriate for use in diagnostic test systems which rely upon physical adsorption of antigens or antibodies.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

5000 Series 0.31μm to 0.93μm Polymer Particle Suspensions (Thermo Scientific™)

Meet the need for particulate materials with a variety of particle sizes and properties with Thermo Scientific™ 5000 Series Polymer Particle Suspensions

Fluoro-Max Green and Red Dry Fluorescent Particles (Thermo Scientific™)

Improve sensitivity and detectability for analytical methods with fluorescent particles that feature bright, distinct colors.

Color-Rich Dyed Carboxylate-Modified Particles (Thermo Scientific™)

Obtain superior test sensitivity in qualitative and quantitative lateral flow tests with Thermo Scientific™ Color-Rich Dyed Carboxylate-Modified Particles.

Sulfate Latex Beads, 8% w/v, 0.6 µm (Invitrogen™)

Microspheres (also called latex beads or latex particles) are spherical particles in the colloidal size range that are formed from an amorphous polymer such as polystyrene. Because of the way that the polystyrene chains arrange themselves in the bead, the surface is very hydrophobic in character, making these ideal materials for the adsorption of materials such as proteins.

These sulfate latex microspheres are stabilized by sulfate charges. In some cases, hydroxyl and carboxyl groups are also present in small amounts bound to the polymer chains. The pKa of the sulfate group is <2 and consequently the particles are stable in acidic media. Suspensions of the particles are stable up to almost 0.30 M univalent electrolyte concentrations and therefore may be used in media of physiological ionic strength. However they are hydrophobic particles and will undergo aggregation in the presence of low concentrations of divalent or trivalent cations unless stabilized by a hydrophilic coating. Sulfate latex is suitable for calibration of particle size analysis equipment and are also appropriate for use in diagnostic test systems which rely upon physical adsorption of antigens or antibodies.

Microspheres Are Available in Many Sizes and Surface Functionalities
25 sizes to choose from—0.02 microns to 16 microns
20 different surface—for ready conjugation to virtually any material
Surfactant free—ultraclean
Various quantities—from milliliter to 500-liter amounts

Key Applications of Microspheres
Instrument calibration (flow cytometry, microscopy, HTS, HCS)
Flow testing (microfluidics, blood flow, water flow, and air flow)
Cell biology tracers (cell differentiation and cell tracing)
Immunoassays (agglutination tests, ELISA, particle capture, and contrast reagents)

Get More Information
Read a technical overview of microspheres and find out about high activity beads, super active beads, specialty beads, and review bead-coupling protocols on the IDC Surfactant-free Latex Beads application page.

We’ll Make a Custom Microsphere Product for You
If you don’t see the microsphere you’re looking for in our stocked list, we’ll make a custom microsphere for you. Our custom conjugation service is efficient and confidential, and we guarantee the quality of our work. We are ISO 9001:2000 certified.

For Research Use Only. Not intended for animal or human therapeutic or diagnostic use.

4000 Series Monosized Particles (Thermo Scientific™)

Minimize response of analytic systems to shape effects with monosized particles.

Fluoro-Max Dyed Green Aqueous Fluorescent Particles (Thermo Scientific™)

Improve sensitivity and detectability for analytical methods with green aqueous fluorescent particles.

Fluoro-Max Dyed Blue Aqueous Fluorescent Particles (Thermo Scientific™)

Achieve improved sensitivity and detectability in analytical methods with internally dyed microspheres that feature bright, high-contrast colors.