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NIST-traceable microspheres, particle size standards, polyethylene spheres, glass microspheres, bond-line spacers.Over a thousand NIST-traceable microspheres are available from Cospheric on this site. When selecting the right microspheres for your R&D project or industrial application, the choice of the correct raw material that the microsphere is made out of becomes critical. Desired material properties drive that choice.

Are you looking for microspheres for high temperature applications, with superior solvent resistance or maximum crush strength? Solid glass microspheres are right for you. Glass microspheres come in several different formulations with varying densities. They can also be metal-coated with silver, nickel, aluminum, or gold, among other options. Conductive and retroreflective properties of coated glass microspheres offer an additional advantages. Glass microspheres are also the preferred material as bond line spacer particles.

Are you looking for brightly colored microspheres with fluorescent or phosphorescent properties for flow visualization experiments, tracer particles for particle image velocimetry (PIV) or contamination studies? In that case polyethylene microspheres are your best choice. These spheres are available in a large range of sphere diameters and tight particle size distributions, which makes them ideal for modeling and simulations. Many densities ranging from 0.98g/cc to 1.3g/cc are among standard products, including neutrally-buoyant spheres with density of 1.0g/cc for use in aqueous solutions. Cospheric's density marker beads also fall in controlled density category.

Silica, PMMA, cellulose acetate, stainless steel, zirconia and other materials are available with a range of diameters and coatings.

Calibration grade glass microspheres (monodisperse/spacer grade), precision grade solid glass polished spheres, and cellulose acetate colored beads, are often used as reference spheres and particle size standards due to their exceptionally narrow diameter tolerance.

Browse the website for one-stop reliable source of all kinds of microspheres. If you still need help selecting the right microspheres to fit your needs, please contact a microsphere expert and we will get back to you within 1 business day.

Most orders (both domestic and international) ship the same business day. Quick and efficient on-line check-out with clearly stated prices and stock status enables you to place an on-line order for microspheres 24/7 anywhere in the world.

CATEGORIES
Hollow and solid glass microspheres with perfect sphericity, tight tolerances and particle size distributions for biomedical, life sciences, microscopy, automotive, high-tech equipment and specialty applications.
High quality solid polyethylene microspheres available not only in a wide variety of colors, but also with opaque, paramagnetic, fluorescent, and phosphorescent properties. Some polyethylene microspheres have a strong triboelectric (electrostatic) charge.
Monodisperse and polydisperse grades of silica nanospheres and microspheres are offered as free-flowing white powder and have an exceptional degree of roundness: >99%.
Poly(methyl methacrylate) or PMMA microspheres are often used as spacers, medical fillers, and cores for metal coated spheres in a wide variety of applications including porous ceramics, self assembled microfluidic devices, biomedical research and life sciences.
A wide selection of size ranges of high quality corrosion resistant stainless steel and titanium microspheres from 1um on up to 1.2mm.
Polypropylene Spheres are highly spherical plastic particles. Large, highly-spherical particles of density less than 1g/cc are a useful tool as reference particles in simulation experiments and process troubleshooting.
Polystyrene Spheres are highly spherical plastic particles in sizes between 2mm and 4.5mm. Large, highly-spherical particles of density greater than 1g/cc are a useful tool as reference particles in simulation experiments and process troubleshooting.
Large Cellulose Acetate Spheres are highly spherical plastic particles that are offered in a selection of bright colors and sizes between 1mm and 3mm. Cellulose Acetate Spheres have high impact and mechanical strength as well as high dielectric constant and good resistance to a variety of chemicals.
Most polymer microspheres are hydrophobic and require small quantities of surfactant in order to be suspended in an aqueous solution.

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Products 1-50 of 127
Barium Sulfate White Polyethylene Polymer Microspheres<br>MRI or X-Ray Medical Applications - Density of 1.00g/cc
Product ID: BSPMS-1.00
Barium Sulfate White Polyethylene Polymer Microspheres - MRI or X-Ray Medical Applications - 1.00g/cc [more info...]
Price: $125.00-$248.50


Barium Sulfate White Polyethylene Polymer Microspheres - Particles for MRI or X-Ray Medical Applications - Density of 1.5g/cc
Product ID: BSPMS-1.5
Barium Sulfate White Polyethylene Polymer Microspheres - MRI or X-Ray Medical Applications - 1.5g/cc [more info...]
Price: $148.50-$248.50


Barium Titanate Solid Glass Microspheres 30-100 micron and 0.3-1mm Diameter
Product ID: BTGMS-4.49-B
Bulk Grades of Barium Titanate Solid Glass Microspheres - 4.0-4.5g/cc - Sizes: 30-100um and 0.3-1.0mm - Index of Refraction: 1.9 [more info...]
Price: $50.00-$158.00


Barium Titanate Solid Glass Microspheres and Spheres
Product ID: BTGMS-4.49
Classified Grades of Barium Titanate Solid Glass Microspheres - Density: 4.0-4.5g/cc - Sizes: 5um to 1000um (1mm) Index of Refraction: ~1.9 [more info...]
Price: $99.00-$248.50


Barium Titanate Solid Glass Microspheres and Spheres
Product ID: BTGMS-ND2.2
Classified Grades of Barium Titanate Solid Glass Microspheres
Density: 4.35-4.38g/cc
Sizes: 5um to 85um
Index of Refraction: ~2.2
[more info...]
Price: $99.00-$248.50


Black Cellulose Acetate Polymer Spheres Density -1.3g/cc 2.5mm and 3.00mm<br>Other Sizes and Colors Available by Request
Product ID: CAS-BK-1.3
Black Cellulose Acetate Polymer Spheres Density ~1.3g/cc - Particle Diameter 1.5mm to 3.5mm
Other Sizes and Colors Available by Request
[more info...]
Price: $50.00


Black Paramagnetic Polyethylene Microspheres 10um to 1mm in Diameter<br>Polymer Spherical MicroBeads can be Manipulated with a Magnet
Product ID: BKPMS
Black Paramagnetic Polyethylene Microspheres, Density of 1.1g/cc and 1.2g/cc 10um to 1.4mm in Diameter
Polymer Spherical MicroBeads can be Manipulated with a Magnet
[more info...]
Price: $99.00-$248.50


Blue Cellulose Acetate Polymer Spheres Density -1.3g/cc 2.0mm Other Sizes and Colors Available by Request
Product ID: CAS-BL-1.3
Blue Cellulose Acetate Polymer Spheres Density ~1.3g/cc - Particle Diameter 2.0mm & 2.5mm
Other Sizes and Colors Available by Request
[more info...]
Price: $50.00


Blue Fluorescent Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 100X magnification
Product ID: HCMS-FMB
Fluorescent Blue Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Blue under daylight and UV illumination (445nm peak emission)
[more info...]
Price: $295.00-$495.00


Blue Polyethylene Microspheres Density of 1.00g/cc <br>Spherical Particles for Flow Visualization and PIV
Product ID: BLPMS-1.00
Blue Polyethylene Microspheres Density of 1.00g/cc
Spherical Blue Particles for Flow Visualization and PIV
[more info...]
Price: $99.00-$248.50


Blue Polyethylene Microspheres Density of 1.00g/cc <br>Spherical Particles for Flow Visualization and PIV
Product ID: BLPMS-1.02
Blue Polyethylene Microspheres Density of 1.02g/cc
Spherical Blue Particles for Flow Visualization and PIV
[more info...]
Price: $125.00


Blue Polyethylene Microspheres Density 1.08g/cc<br>Bright Blue Polymer Spherical MicroBeads
Product ID: BLPMS-1.08
Blue Polyethylene Microspheres Density 1.08g/cc
Bright Blue Polymer Spherical MicroBeads
[more info...]
Price: $99.00-$148.50


Borosilicate Solid Glass Microspheres 2.2g/cc<br>Many Sizes 20micron to 6150mm
Product ID: BSGMS-2.2
Classified Grades of Borosilicate Solid Glass Microspheres 2.2g/cc
>90% spherical and >90% in size range. Particle Sizes Between 20micron and 6150micron.
[more info...]
Price: $125.00-$299.00


Borosilicate Solid Glass Spheres 2.2g/cc<br>Many Sizes 850micron to 6.15mm
Product ID: BSGS-2.2
Classified Grades of Borosilicate Solid Glass Microspheres 2.2g/cc
>90% spherical and >90% in size range. Particle Sizes Between 850micron to 6.15mm
[more info...]
Price: $125.00-$175.00


Fluorescent yellow spheres. Neutrally-buoyant microspheres for flow visualization.
Product ID: UVPMS-BY-1.00
Bright Yellow Polyethylene Microspheres 1.00g/cc - Various Sizes Between 500micron and 0.85mm
Neutrally-buoyant spheres for flow visualization.
[more info...]
Price: FREE


Red Cellulose Acetate Polymer Spheres Density -1.3g/cc - 1.5mm and 3.00mm<br>Other Sizes and Colors Available by Request
Product ID: CAS-1.3
Cellulose Acetate Polymer Spheres Density 1.3g/cc - Particle Diameters 1mm to12mm
Other Sizes and Colors Available by Request
[more info...]
Price: $50.00


Large PMMA Spheres
Product ID: PMMAMS-1.2
Clear Poly(Methyl Methacrylate) PMMA microspheres supplied in dry powder form
>90% in particle size range. Particle sizes between 150 and 750micron.
[more info...]
Price: $197.50


Clear Poly(Methyl Methacrylate) PMMA Microspheres
Product ID: PMPMS-1.2
Clear Poly(Methyl Methacrylate) PMMA microspheres supplied in dry powder form
>90% in particle size range. Particle sizes between 3 and 150micron.
[more info...]
Price: $112.50-$279.50


Large PMMA Spheres
Product ID: PMMAS-1.2
Clear Poly(Methyl Methacrylate) PMMA Spheres supplied in dry powder form
>90% in particle size range.
[more info...]
Price: $55.00


Clear Polyethylene Microspheres 0.96g/cc - Various Sizes 100micron to 1700micron (1.7mm)
Product ID: CPMS-0.96
Clear Polyethylene Microspheres 0.96g/cc - Various Sizes 1micron to 1700micron (1.7mm)
>90% in particle size range and >90% spherical.
[more info...]
Price: $99.00-$248.50


Clear Polyethylene Particles 0.96g/cc - Various Sizes 0.6mm - 2.8mm
Product ID: CPB-0.96
Clear Polyethylene Particles 0.96g/cc - Various Sizes 0.6mm - 2.8mm
Polymer Beads >90% in Particle Size Range >75% Round
[more info...]
Price: $55.00


Gold-Coated Solid Glass Microspheres - High Density - Transparent Slightly Conductive Gold Coating on Glass Particles
Product ID: BTGMS-AU-4.49
Gold-Coated (~20nm coating thickness)
Solid Barium Titanate Glass Microspheres 4.49g/cc
Size range: 30-100um
[more info...]
Price: $279.50


Highly Electrically Conductive Hollow Glass Microspheres
Product ID: M-18-Ni-0.69
Electrically conductive nickel-coated microspheres with density of 0.69g/cc.
Particle Size Range 5-30um.
[more info...]
Price: $85.00


Nickel-plated Hollow Glass Microspheres 5-30um - Metal Coated Glass Beads, Spheres, Microparticles
Product ID: HGMS-Ni
Nickel-plated Hollow Glass Microspheres 5-30um [more info...]
Price: $99.00-$565.00


Conductive Silver Metal Coated Hollow Glass Microspheres - 10-150micron
Product ID: M-60-0.16
Conductive Silver Metal Coated Hollow Glass Microspheres 0.15-0.42g/cc
Various Sizes 10-150micron.
[more info...]
Price: $99.00-$279.50


Conductive Silver Metal Coated Hollow Glass Microspheres - Density 0.49g/cc
Product ID: M-40-0.49
Conductive Silver Metal Coated Hollow Glass Microspheres 0.41-0.72g/cc
Various Sizes 10-90micron
[more info...]
Price: $99.00-$249.00


Highly Electrically Conductive Hollow Glass Microspheres
Product ID: M-18-AG-0.75
Highly electrically conductive silver-coated microspheres with density of 0.75g/cc
Particle Size Range 5-30um. 45dB of EMI shielding at 20% loading.
[more info...]
Price: $99.00-$1,481.00


"Conductospheres™" Conductive Silver Metal Coated Hollow Glass Microspheres
Product ID: HGMS-AG-1.08
Highly electrically conductive microspheres can be used as a filler that is lighter than solid silver.
Add to paints, adhesives and composites to provide electrical conductivity.
[more info...]
Price: $198.50-$248.50


Soda Lime Solid Glass Silver Metal Coated Microspheres<br>Density 2.5g/cc
Product ID: SLGMS-AG-B
Conductive Silver Metal Coated Solid Soda Lime Glass Microspheres - Bulk Sizes between 11 and 110micron.
>80% in particle size range and >85% spherical particles.
[more info...]
Price: $99.00-$148.50


Silver Metal Coated Soda Lime Solid Glass Microspheres<br>Density 2.5g/cc
Product ID: SLGMS-AG
Conductive Silver Metal Coated Solid Soda Lime Glass Microspheres - Sizes between 1 and 106micron.
>90% in particle size range and >85% spherical particles.
[more info...]
Price: $99.00-$248.50


Fluorescent Blue Polyethylene Polymer Microspheres, Particles, Beads<br>Density 1.13g/cc
Product ID: UVPMS-BB-1.13
Fluorescent Blue Polyethylene Polymer Microspheres - Density 1.13g/cc
Bright Blue UV Fluorescent Polymer Particles, Beads, Spheres
[more info...]
Price: $99.00-$197.50


Fluorescent Green Polyethylene Microspheres<br>Density 1.00g/cc for Flow Visualization and PIV
Product ID: UVPMS-BG-1.00
Fluorescent Green Polyethylene Microspheres Density of 1.00g/cc
Spherical Flourescent Particles for Flow Visualization and PIV
[more info...]
Price: $99.00-$248.50


Fluorescent Green Polyethylene Microspheres<br>Bright Green Polymer Beads Density 1.015g/cc
Product ID: UVPMS-BG-1.015
Fluorescent Green Polyethylene Microspheres Density 1.015g/cc
Bright Green Polymer Beads Diameter 355micron to 500um
[more info...]
Price: $99.00


Fluorescent Green Polyethylene Microspheres<br>Bright Green Polymer Beads Density 1.01g/cc
Product ID: UVPMS-BG-1.01
Fluorescent Green Polyethylene Microspheres Density 1.01g/cc
Bright Green Polymer Spheres Diameter 27micron to 425um
[more info...]
Price: $99.00-$197.50


Fluorescent Green Polyethylene Microspheres<br>Bright Green Polymer Microbeads Density 1.025g/cc
Product ID: UVPMS-BG-1.025
Fluorescent Green Polyethylene Microspheres with Density 1.025g/cc
Bright Green Polymer MicroBeads
[more info...]
Price: $99.00-$248.50


Fluorescent Green Polyethylene Microspheres<br>Bright Green Polymer Beads Density 1.02g/cc
Product ID: UVPMS-BG-1.02
Fluorescent Green Polyethylene Microspheres Density 1.02g/cc
Bright Green Polymer Spheres or Beads
[more info...]
Price: $99.00


Fluorescent Green Polyethylene Microspheres Density 1.035g/cc<br>Bright Green Polymer Spherical Microbeads
Product ID: UVPMS-BG-1.035
Fluorescent Green Polyethylene Microspheres Density 1.035g/cc
Bright Green Polymer Spherical Microbeads
[more info...]
Price: $99.00-$197.50


Fluorescent Orange Polyethylene Microspheres Density 1.00g/cc<br>Spherical Bright Orange MicroBead Polymer Particles for Flow Visualization and PIV
Product ID: UVPMS-BO-1.00
Fluorescent Orange Polyethylene Microspheres Density 1.00g/cc
Spherical Bright Orange MicroBead Polymer Particles for Flow Visualization and PIV
[more info...]
Price: $99.00-$248.50


Fluorescent Orange Polyethylene Microspheres Density 1.015g/cc<br>Bright Orange Polymer Spherical MicroBeads
Product ID: UVPMS-BO-1.015
Fluorescent Orange Polyethylene Microspheres Density 1.015g/cc
Bright Orange Polymer Spherical MicroBeads
[more info...]
Price: $99.00-$197.50


Fluorescent Orange Polyethylene Microspheres Density 1.030g/cc<br>Spherical Polymer Particles Fluorescent in UV Light
Product ID: UVPMS-BO-1.03
Fluorescent Orange Polyethylene Microspheres Density 1.03g/cc
Spherical Polymer Particles Fluorescent in UV Light
[more info...]
Price: $99.00-$197.50


Fluorescent Orange Polyethylene Microspheres Density 1.040g/cc<br>Spherical Polymer Particles Fluorescent in UV Light
Product ID: UVPMS-BO-1.040
Fluorescent Orange Polyethylene Microspheres Density 1.040g/cc
Spherical Polymer Particles Fluorescent in UV Light
[more info...]
Price: $99.00-$125.00


Fluorescent Red Polyethylene Microspheres<br>Density 0.995g/cc<br>Bright Fluorescent Red Particles 605nm Peak.
Product ID: UVPMS-BR-0.995
Fluorescent Red Polyethylene Microspheres Density 0.995g/cc
Bright Fluorescent Red Particles 605nm Peak. Works well with Green Lasers.
[more info...]
Price: $99.00-$248.50


Fluorescent Red Polyethylene Microspheres Density 1.050g/cc<br>Bright Fluorescent Red Particles 605nm Peak.
Product ID: UVPMS-BR-1.050
Fluorescent Red Polyethylene Microspheres Density 1.050g/cc
Bright Fluorescent Red Particles 605nm Peak. Works well with Green Lasers.
[more info...]
Price: $99.00-$197.50


Fluorescent Red Polyethylene Microspheres Density 1.090g/cc<br>Bright Fluorescent Red Particles 605nm Peak.
Product ID: UVPMS-BR-1.070
Fluorescent Red Polyethylene Microspheres Density 1.070g/cc
Bright Fluorescent Red Particles 605nm Peak. Works well with Green Lasers.
[more info...]
Price: $248.50


Fluorescent Red Polyethylene Microspheres Density 1.090g/cc<br>Bright Fluorescent Red Particles 605nm Peak.
Product ID: UVPMS-BR-1.090
Fluorescent Red Polyethylene Microspheres Density 1.090g/cc
Bright Fluorescent Red Particles 605nm Peak. Works well with Green Lasers.
[more info...]
Price: $99.00-$248.50


Fluorescent Red Polyethylene Microspheres Density 1.20g/cc Bright Fluorescent Red Particles 605nm Peak
Product ID: UVPMS-BR-1.20
Fluorescent Red Polyethylene Microspheres 1.20g/cc - Various Sizes 10um to 600um (0.6mm) [more info...]
Price: $99.00-$248.50


Fluorescent Violet Polyethylene Microspheres<br>Density 1.00g/cc for Flow Visualization and PIV
Product ID: UVPMS-BV-1.00
Fluorescent Violet (Purple) Polyethylene Microspheres Density of 1.00g/cc
Spherical Flourescent Particles for Flow Visualization and PIV
[more info...]
Price: $148.50-$248.50


Fluorescent Violet Polyethylene Microspheres<br>Density 1.06g/cc
Product ID: UVPMS-BV-1.06
Fluorescent Violet (Purple) Polyethylene Microspheres Density of 1.06g/cc
Spherical Flourescent Particles
[more info...]
Price: $99.00-$148.50


Fluorescent Yellow Microspheres Density 1.00g/cc for Flow Visualization and PIV<br>Bright Fluorescent Yellow-Green Particles with UV and Visible Illumination
Product ID: UVPMS-BY2-1.00
Fluorescent Yellow Microspheres Density 1.00g/cc for Flow Visualization and PIV
Bright Fluorescent Yellow-Green Particles with UV and Visible Illumination
[more info...]
Price: $99.00-$248.50


Fluorescent Yellow Microspheres Density 1.02g/cc for Flow Visualization and PIV<br>Bright Fluorescent Yellow-Green Particles with UV and Visible Illumination
Product ID: UVPMS-BY2-1.02
Fluorescent Yellow Microspheres Density 1.02g/cc for Flow Visualization
Bright Fluorescent Yellow-Green Particles with UV and Visible Illumination
[more info...]
Price: $148.50-$197.50


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Products 1-50 of 127