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Polyethylene Microspheres (PE)

Cospheric LLC specializes in a large selection of polyethylene microspheres in particle size from 1um to 1.7mm. High quality solid polyethylene microspheres are now commercially 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. Black microspheres can be manufactured with paramagnetic or static-dissipative properties.

Microspheres in any color can be made neutrally buoyant in water with specific gravity of 1.00g/cc. The density can be adjusted to create microspheres neutrally buoyant in other media. A wide variety of PE microparticles with custom specific gravity from 0.96g/cc to 1.3g/cc, allowing researchers to match the density of the spheres to that of the surrounding fluid for PIV and fluid flow visualization experiments, as well as density marker beads applications. Most of the grades of polyethylene microspheres meet the specification of >90% in particle size range and >90% spherical particles. PE Polymer beads are generally hydrophobic and have high protein binding abilities. However, they often require the use of a surfactant to ensure ease of handling and suspension in aqueous solutions. Custom color and density polyethylene microspheres can be manufactured by request.

Size and Form: Solid polymer spheres in dry powder form. Refer to sizes for USA standard sieves (ASTM E11) for ranges of particle sizes. Sphericity: Polyethylene spheres are screened to prevent any dust, debris, and non-spherical microparticles. High quality identical polymer spheres with excellent uniformity. Opacity: Clear microspheres are translucent pure polyethylene. Opaque microspheres are truly opaque (will not transmit light even in a 50um monolayer).

See link for research articles involving our polyethylene spheres.

CATEGORIES
Cospheric specializes in developing and manufacturing microspheres to customer's specific color requirements. All the colors have been developed by customer request.
Fluorescent polyethylene microspheres emit bright colors and become highly visible when illuminated by UV light.
Barium Sulfate is embedded into the microspheres and acts as a radiocontrast agent for X-ray imaging and other diagnostic procedures.

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Products 1-50 of 51
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 1um to 1700um (1.7mm)
>90% in particle size range and >90% spherical.
[more info...]
Price: $99.00-$248.50


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 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 1.015g/cc
Product ID: UVPMS-BG-1.015
Fluorescent Green Polyethylene Microspheres Density 1.015g/cc
Bright Green Polymer Beads Diameter 355micron to 500um (0.5mm)
[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 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-$112.50


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 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 1.20g/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 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 1.050g/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 1.070g/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


Black Paramagnetic Polyethylene Microspheres 10um to 1mm in Diameter<br>Paramagnetic microspheres have the ability to increase their magnetization with an applied magnetic field and decrease their magnetism when the field is removed.
Product ID: BKPMS
Paramagnetic microspheres have the ability to increase their magnetization with an applied magnetic field and decrease their magnetism when the field is removed. [more info...]
Price: $99.00-$248.50


Highly Opaque White Polyethylene Microspheres, Polymer Beads, Particles
Product ID: WPMS
Highly Opaque White Polyethylene Microspheres, Polymer Beads, Particles
Various Sizes 10micron to 1200um (1.2mm) in Diameter
[more info...]
Price: $99.00-$248.50


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


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


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 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-$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


Orange Polyethylene Microspheres Density 1.00g/cc<br>Spherical Opaque Polymer Particles for Flow Visualization and PIV
Product ID: ORGPMS
Orange Polyethylene Microspheres
Density: 1.00g/cc, 1.015g/cc
Sizes: 20um to 1200um (1.2mm)
[more info...]
Price: $99.00-$248.50


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


Orange Polyethylene Microspheres Density 1.00g/cc<br>Spherical Opaque Polymer Particles for Flow Visualization and PIV
Product ID: ORGPMS-1.015
Orange Polyethylene Microspheres Density 1.015g/cc
Spherical Opaque Polymer Particles for Flow Visualization and PIV
[more info...]
Price: $99.00-$197.50


Grey Polyethylene Microspheres Density 1.02g/cc<br>Spherical Opaque Grey Particles for Flow Visualization and PIV
Product ID: GRYPMS
Grey Polyethylene Microspheres
Density 1.00g/cc, 1.02g/cc, 1.05g/cc
Sizes: 20um-1200um (1.2mm)
[more info...]
Price: $99.00-$248.50


Grey Polyethylene Microspheres Density 1.00g/cc<br>Spherical Opaque Grey Particles for Flow Visualization and PIV
Product ID: GRYPMS-1.00
Grey Polyethylene Microspheres Density 1.00g/cc
Spherical Opaque Grey Particles for Flow Visualization and PIV
[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-$248.50


Red Polyethylene Microspheres<br>Bright Red Spherical Polymer Microparticles
Product ID: REDPMS
Red Polyethylene Microspheres
Bright Red Spherical Polymer Microparticles
[more info...]
Price: $99.00


Red Polyethylene Microspheres Density 0.98g/cc<br>Bright Red Spherical Polymer Microparticles
Product ID: REDPMS-0.98
Red Polyethylene Microspheres Density 0.98g/cc
Bright Red Spherical Polymer Microparticles
[more info...]
Price: $99.00-$248.50


Red Polyethylene Microspheres Density 1.070g/cc<br>Bright Red Polymer Spherical Microparticles
Product ID: REDPMS-1.070
Red Polyethylene Microspheres Density 1.070g/cc
Bright Red Polymer Spherical Microparticles
[more info...]
Price: $99.00-$125.00


Red Polyethylene Microspheres Denstiy 1.080g/cc<br>Bright Red Polymer Spherical Microbeads
Product ID: REDPMS-1.080
Red Polyethylene Microspheres Denstiy 1.080g/cc
Bright Red Polymer Spherical Microbeads
[more info...]
Price: $99.00-$197.50


Red Polyethylene Microspheres Density 1.065g/cc<br>Bright Red Polymer Spherical Microparticles
Product ID: REDPMS-1.065
Red Polyethylene Microspheres Density 1.065g/cc
Bright Red Polymer Spherical Microparticles
[more info...]
Price: $99.00


Red Polyethylene Microspheres 1.035g/cc<br>Bright Red Spherical Polymer Microparticles
Product ID: REDPMS-1.035
Red Polyethylene Microspheres 1.035g/cc
Bright Red Spherical Polymer Microparticles
[more info...]
Price: $99.00


Red Polyethylene Microspheres Density 1.09g/cc<br>Bright Red Polymer Spherical Microbeads
Product ID: REDPMS-1.09
Red Polyethylene Microspheres Density 1.09g/cc
Bright Red Polymer Spherical Microbeads
[more info...]
Price: $99.00


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


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


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


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


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


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


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


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


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


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Products 1-50 of 51