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By Color

Cospheric offers an exclusive product line of brightly-colored polyethylene microspheres. Cospheric's polyethylene micropheres range in size from 10micron to 1000micron (1 millimeter) and in some cases up to 1.2mm. The uniqueness of our product is that the colorant is bright, fully embedded into the microsphere, uniformly distributed, and will not fade over time or leach out of the particle into the solution. The colored microspheres are conveniently provided in a glass vial or a glass jar as a free-flowing dry powder, which does not have an expiration date and can be safely stored at room temperature indefinitely.

Currently we have a large stock of sizes in clear (uncolored polyethylene), white, red, blue, green, black (paramagnetic), yellow, red, violet, pink, orange, and grey microspheres. This is one of our core product lines and we welcome requests for custom colors and/or custom densities between 0.98g/cc and 1.2g/cc, which are often used for medical technology applications. Browse a large selection of microsphere products on-line or contact a microsphere expert for a recommendation or a custom quote. Place an order on-line 24/7. We ship microspheres worldwide on a daily basis!

CATEGORIES
Clear (translucent) microspheres and spheres in variety of formulations (polyethylene, poly(methyl methacrylate), solid and hollow glass). High index of refraction in barium titanate glass microspheres.
Opaque white spheres and microspheres in variety of materials and properties, including opaque white polyethylene, cellulose acetate, TiO2-coated spheres, zirconium oxide, silica, barium sulfate, polystyrene, polypropylene and more.
Fluorescent and non-fluorescent green spheres and microspheres are available in a variety of densities, sizes and formulations.
Whether used to trace the cardiovascular system of an animal or perform contamination studies on a critical process, high quality spherical red particles offer a versatile tool for scientific investigation.
Highly-spherical and colorful plastic particles are a useful tool as reference particles in simulation experiments and are successfully used in vision systems and fluidized bed applications.
Grey microspheres of high sphericity and tightly defined particle size distribution are used in industrial and scientific applications for process control, diagnostics, and medical device technology.
Bright orange microspheres help color code the particles to better understand which part of the process the spheres of the specific size were able to pass through, or where the contamination in the process is coming from.
Many options of this bright highly visible marker. Some yellow particles were specifically designed with density of 1g/cc for suspension in fresh water, enabling flow visualization and PIV analysis of fluid flow in a device.
Bright blue spherical polymer particles are supplied in dry powder form and are color-stable in solution. Controlled particle size ranges enable investigation of maximum particle size passing through openings, filters and membranes.
Pink microspheres offer an additional option for color-coding experiments. Particles with density of 1.00g/cc offer exceptional performance as flow tracer or seed particles in Particle Image Velocimetry of aqueous solutions.
Violet (purple) spheres are available in fluorescent or non-fluorescent options. These spheres offer high visibility, sphericity, fluorescent response, and density designed for suspension.

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Products 51-100 of 120
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


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


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


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


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


Solid Ceramic Microspheres with Partial Coating (Bipolar and Bichromal Janus Particles)
Product ID: HCMS-Ceramic
Solid Ceramic Microspheres with Half-shell Color Coating (Bipolar and Bichromal Janus Particles)
Particle Size ranges between 45micron and 1400micron (1.4mm)
[more info...]
Price: $495.00


Precision Polished Borosilicate Glass Spheres 2.00mm
Product ID: P-BSGS-2.2
Precision Polished Grades of Borosilicate Solid Glass Spheres.
>99% spherical +/-20um Diameter Tolerance
[more info...]
Price: $86.00-$142.00


Red Cellulose Acetate Polymer Spheres Density -1.3g/cc - 1.0mm and 3.00mm<br>Other Sizes and Colors Available by Request
Product ID: CAS-RED-1.3
Red Cellulose Acetate Polymer Spheres Density ~1.3g/cc - Particle Diameters 1.0mm to 3.0mm [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


Green Fluorescent  Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 100X magnification
Product ID: HCMS-FMG
Fluorescent Green Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Green under daylight and UV illumination (515nm peak emission)
[more info...]
Price: $295.00-$600.00


Orange Fluorescent Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 200X magnification
Product ID: HCMS-FMO
Fluorescent Orange Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Orange under daylight and UV illumination (606nm peak emission)
[more info...]
Price: $495.00


Orange-Yellow Fluorescent-Coated Glass Microspheres - Various sizes and densities fluorescent Orange-Yellow glass, fluorescent Orange-Yellow glass spheres, microspheres, particles, microparticles, beads, UV
Product ID: HCMS-FMOY
Fluorescent Orange-Yellow Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Orange-Yellow under daylight and UV illumination (594nm peak emission)
[more info...]
Price: $495.00


Red Fluorescent Hemispherical Coating on Solid Glass Microspheres 45-53 micron - 200X magnification
Product ID: HCMS-FMR
Fluorescent Red Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Red under daylight and UV illumination (607nm peak emission)
[more info...]
Price: $375.00-$550.00


Violet Fluorescent-Coated Glass Microspheres - Various sizes and densities fluorescent Violet glass, fluorescent Violet glass spheres, microspheres, particles, microparticles, beads, UV
Product ID: HCMS-FMV
Fluorescent Violet Hemispherical Coating on Borosilicate, Soda Lime or Barium Titanate Solid Glass Spheres
Color: Bright Violet under daylight and UV illumination (636nm peak emission)
[more info...]
Price: $495.00


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Products 51-100 of 120