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Spherical Particles

Cospheric offers a large selection of spheres, microspheres and nanospheres, which can be selected based on the desired material properties (glass, polymer, silica, metal, metal-coated), by particle diameter (nanometers to millimeters), by density of the microspheres, by color of the particle (large variety of bright colors are available) or specific functionalities of the particle (fluorescent, phosphorescent, conductive, paramagnetic, neutrally-buoyant, density marker beads, and more).

We offer only the most precise, highest-quality microspheres available on the market. We characterize each product we offer by measuring density and particle size distribution of a statistically significant sample of particles. NIST traceability of microsphere size and density is available by purchasing a NIST-Traceable Microsphere Certificate of Analysis.

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By Material
NIST-traceable microspheres manufactured out of glass, polyethylene, PMMA, cellulose acetate, stainless steel, silica, zirconium and other materials. Metal, fluoro, and silane coatings on solid and hollow glass microspheres. Monodisperse and polydisperse grades of microparticles.
Diameter or particle size of microspheres, as well as particle size distribution, is a critical factor when selecting microspheres for a particular application. Microspheres with diameters from nanometers to millimeters are offered in a variety of grades from bulk options to highly monodisperse spacer grade spheres.
Microsphere density is a critical parameter when selecting microparticles for a specific application. Do the spheres need to be neutrally-buoyant in the fluid for flow visualization or PIV applications? Do they need to float or sink? Is a set of density marker beads needed for density gradients?
Micropspheres with specific properties, such as conductive, fluorescent, phosphorescent, paramagnetic, photocatalytic, retroreflective are offered in a variety of colors, sizes and densities. Density marker beads and janus particles. PIV tracer particles and bond line spacers.
Metal-coated solid and hollow glass and polymer microspheres, including silver, gold, aluminum, nickel coatings. Other coatings such as fluorochemical, silane and TiO2 and ZnO. Custom coatings and partially coated spheres (janus particles) on request.
Microspheres in a rainbow of bright colors, uniform, consistent, highly spherical properties. The colorant is fully embedded into the microsphere. It will not fade over time or leach out into the solution. Custom color microspheres on request.

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Products 51-100 of 131
Red Polyethylene Microspheres Density 1.12g/cc<br>Bright Red Polymer Spherical Microbeads
Product ID: REDPMS-1.12
Red Polyethylene Microspheres Density 1.12g/cc
Bright Red Polymer Spherical Microbeads
[more info...]
Price: $99.00


Bulk Grades of Solid Soda Lime Glass Microspheres 2.5g/cc. Optional Fluorochemical and Silane Coatings.<br>Mean Diameters 3-6um, 8-12um, 35-45um, 65-75um.
Product ID: P2000SL-2.5
Bulk Grades of Solid Soda Lime Glass Microspheres 2.5g/cc. Optional Fluorochemical and Silane Coatings.
Mean Diameters 3-6um, 8-12um, 35-45um, 65-75um
[more info...]
Price: $50.00-$168.00


Yttria Stabilized Zirconia Microspheres, Spherical Particles, Beads
Product ID: YSZMS/YSZS
Ceramic spheres and microspheres with very high strength, toughness, and excellent wear and impact resistance. [more info...]
Price: $99.00-$197.50


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


250nm Silver on PMMA Cores
Product ID: PMMAMS-AG
Conductive Silver-Coated Poly(Methyl Methacrylate) PMMA microspheres supplied in dry powder form
Highly Speherical>99% in particle size range. Sizes from 125 and 750micron
[more info...]
Price: $295.50-$348.50


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


Silver Coated PMMA Micorparticles 5-125um
Product ID: PMPMP-AG
Conductive Silver Coated Poly(Methyl Methacrylate) PMMA microparticles supplied in dry powder form
>90% in particle size range. Sizes from 5um to 125um
[more info...]
Price: $99.00-$148.50


Pink Polyethylene Microspheres Density 1.00g/cc<br>Pink (Magenta) Polymer Spheres for Flow Visualization and PIV
Product ID: PNKPMS-1.00
Pink Polyethylene Microspheres Density 1.00g/cc
Pink (Magenta) Polymer Spheres for Flow Visualization and PIV
[more info...]
Price: $99.00-$248.50


Red Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron
Product ID: FMR-1.3 1-5um
Red Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron in diameter.
Excitation and Emission Wavelength Spectra. Peak at 607nm.
[more info...]
Price: $99.00


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


Fluorescent Polymer Spheres (Green) 1.100g/cc density
Product ID: UVPMS-BG-1.100
Fluorescent green microspheres are designed with density of 1.100g/cc, ideal for simulating pollen dispersion.
Particles exhibit a strong fluorescent response and are color stable in solution.
[more info...]
Price: $197.50-$298.50


Green Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron in diameter.
Product ID: FMG-1.3
Green Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron in diameter
Excitation and Emission Wavelength Spectra. Peak at 515nm.
[more info...]
Price: $99.00


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 to 12mm
Other Sizes and Colors Available by Request
[more info...]
Price: $50.00


High Index of Refraction Solid Glass Microspheres - Density 4.1-4.2g/cc
Product ID: BTGMS-HI
Classified Grades of High Index of Refraction Barium Titanate Solid Glass Microspheres
Density: 4.1-4.2g/cc
Sizes: 60um to 600um (0.6mm)
Index of Refraction: >1.93
[more info...]
Price: $125.00-$184.50


High Index of Refraction Solid Glass Microspheres - Density 4.1-4.2g/cc
Product ID: BTGMS-HI-B
Classified Grades of High Index of Refraction Barium Titanate Solid Glass Microspheres
Density: 4.1-4.2g/cc
Sizes: 60-75um, 70-90um, 125-190um, 180-265um, 325-600um
Index of Refraction: >1.93
[more info...]
Price: $62.50-$1,038.00


250nm Silver on PMMA Cores
Product ID: PMPMS-AG-1.3-1.6
Conductive Silver Coated Poly(Methyl Methacrylate) PMMA microspheres supplied in dry powder form
>90% in particle size range. Sizes from 45um to 135um
[more info...]
Price: $162.50-$198.50


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


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 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


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 180micron.
>90% in particle size range and >85% spherical particles.
[more info...]
Price: $99.00-$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 160micron.
>80% in particle size range and >85% spherical particles.
[more info...]
Price: $99.00-$148.50


Fluorescent Green Coating on Paramagnetic Black Core 50um
Product ID: HCMS-BLK-FMG
Solid Black Paramagnetic Polyethylene Microspheres with Partial Fluorescent Green Coating
Particle Size ranges between 45micron and 1.2mm, Specify at time of order
[more info...]
Price: $495.00


UV Fluorescent Microspheres Density 0.98g/cc - Clear (Translucent) in Daylight, Brilliant Yellow-Green with UV illumination (365nm)
Product ID: UVYGPMS-0.97
UV Fluorescent Microspheres Density 0.97g/cc
Clear (Translucent) in Daylight, Brilliant Yellow-Green with UV illumination (365nm)
[more info...]
Price: $99.00-$248.50


Conductive Silver Metal Coated Hollow Glass Microspheres - Density 0.49g/cc
Product ID: HGMS-AG
Hollow Glass Microspheres with Conductive Silver Coating
Densities From 0.1g/cc to 0.8g/cc
Sizes from 5um to 150um
[more info...]
Price: $99.00-$279.50


"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


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


PE Nanospheres
Product ID: PENS
Polyethylene Nanospheres 200nm-9900nm [more info...]
Price: $148.50-$197.50


Tween 80 Biocompatible Surfactant for Suspension of Hydrophobic Particles, Microspheres and Density Marker Beads in Aqueous Media
Product ID: Tween
Tween 80 and 20 Biocompatible Surfactants - 2ml [more info...]
Price: $15.00


Green Polyethylene Microspheres Density 0.98g/cc<br>Translucent Green Spherical Polymer Microbeads
Product ID: GPMS-0.98
Green Polyethylene Microspheres Density 0.98g/cc
Translucent Green Spherical Polymer Microbeads
[more info...]
Price: $99.00-$248.50


Phosphorescent Yellow-Green Polyethylene Microspheres Density 1.14g/cc<br>Glow In the Dark Yellow-Green Response (470nm-600nm) - Long After-Glow
Product ID: PHYGPMS-1.14
Phosphorescent Yellow-Green Polyethylene Microspheres Density 1.14g/cc
Glow In the Dark Yellow-Green Response (470nm-600nm) - Long After-Glow
[more info...]
Price: $99.00-$248.50


Precision Polished Soda Lime Glass Spheres 1.5mm
Product ID: P-SLGS-2.5
Precision Polished Grades of Soda Lime Solid Glass Spheres.
>99% spherical +/-20um Diameter Tolerance
[more info...]
Price: $45.00-$171.00


Blue Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron in diameter
Product ID: FMB-1.3 1-5um
Blue Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron in diameter.
Excitation and Emission Wavelength Spectra. Peak at 445nm.
[more info...]
Price: $99.00


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


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


Polystyrene Polymer Spheres Density -1.05g/cc 2.00mm - High Quality Polystyrene Plastic Spheres
Product ID: PSS-1.05
Polystyrene Polymer Spheres Density ~1.05g/cc 1mm - 1mm
High Quality Polystyrene Plastic Spheres
[more info...]
Price: $50.00-$65.00


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


Rhodamine B Polyethylene Microspheres Density 0.98g/cc - Peak Excitation Wavelength: -540nm (Green)<br>Emission Wavelength: Weak Orange response -595nm - Daylight Color: Pinkish Red
Product ID: RHBPMS-0.98
Rhodamine B Polyethylene Microspheres Density 0.98g/cc - Peak Excitation Wavelength: ~540nm (Green)
Emission Wavelength: Weak Orange Response ~595nm - Daylight Color: Pinkish Red
[more info...]
Price: $99.00-$248.50


Solid Soda Lime Glass Spheres 2.5g/cc<br>Particle Sizes between 850um and 7.1mm
Product ID: SLGS-2.5
Classified Grades of Soda Lime Solid Glass Spheres.
>85% spherical >90% in size range. Many particle sizes between 850um to 4.4mm
[more info...]
Price: $55.00-$165.00


Yellow Polyethylene Microspheres Density 1.00g/cc<br>Spherical Bright Yellow Particles for Flow Visualization and PIV
Product ID: YPMS-1.00
Yellow Polyethylene Microspheres Density 1.00g/cc
Spherical Bright Yellow Particles for Flow Visualization and PIV
[more info...]
Price: $125.00-$299.00


Orange-Yellow Fluorescent Microspheres 1-5micron (um) - Emission Wavelength Spectra 594nm Peak, Excitation Wavelength Specta 460nm Peak
Product ID: FMOY-1.3
Orange-Yellow Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron in diameter
Emission Wavelength Spectra 594nm Peak, Excitation Wavelength Specta 460nm Peak
[more info...]
Price: $99.00


Yellow Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron in diameter
Product ID: FMY-1.3 1-5um
Yellow Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron in diameter.
Excitation and Emission Wavelength Spectra. Peak at 525nm.
[more info...]
Price: $99.00


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


Polydisperse Silica Microspheres 1.67g/cc d50=4-8um - Porous Silica Beads
Product ID: SiO2MS-PD
Polydisperse silica microspheres offer an economical option with excellent dispersibility, oil absorbancy, and fluidity. [more info...]
Price: $99.00-$395.00


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


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


UV Fluorescent Microspheres - Yellow in Daylight, Blue-Green in UV Light 0.98g/cc - Bright Fluorescent Polymer Beads, Particles
Product ID: UVBGPMS-0.98
UV Fluorescent Microspheres - Yellow in Daylight, Blue-Green in UV Light 0.98g/cc
Bright Fluorescent Polymer Beads, Particles
[more info...]
Price: $99.00-$148.50


Orange Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron in diameter.
Product ID: FMO-1.3 1-5um
Orange Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron in diameter.
Excitation and Emission Wavelength Spectra. Peak at 606nm.
[more info...]
Price: $99.00


Violet Fluorescent Microspheres 1-5micron (um) - Emission Wavelength Spectra 636nm Peak, Excitation Wavelength Specta 584nm Peak
Product ID: FMV-1.3
Violet Luminescent, Ultraviolet Fluorescing Polymer Microspheres 1 - 5micron in diameter
Emission Wavelength Spectra 636nm Peak, Excitation Wavelength Specta 584nm Peak
[more info...]
Price: $99.00


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 850um to 6.15mm
[more info...]
Price: $125.00-$175.00


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Products 51-100 of 131