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Solid Polyethylene Microspheres:

(polymer spheres, balls, beads, microbeads, microparticles)

Cospheric specializes in development and manufacturing of solid polyethylene microspheres. Polyethylene spherical microparticles can be customized for microsphere diameter from 10um to 1000um (1mm), as well as to be opaque, colored, fluorescent, triboelectric (electrostatic) charged positive or negative. Black microspheres can be manufactured with magnetic or static-dissipative properties. Microspheres in any color can be made neutrally buoyant in water with specific gravity of 1g/cc. The density can be adjusted to create microspheres neutrally buoyant in other media.

Yellow Microspheres
Size and Form: 
Solid polymer spheres in dry powder form. 
Particle sizes from 10 micron to 3mm (3000 micron).
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.

Orange Opaque Polyethylene MicrospheresOpacity: 
Clear microspheres are translucent (un-pigmented) polyethylene.
Opaque microspheres are truly opaque.
Opaque spheres will not transmit light even in a 50um monolayer.
The only truly opaque microspheres on the market.

Density: 
0.96 - 1.3 g/cc (depends on the formulation). 
1g/cc microspheres - neutrally buoyant in water.

Color Matched Microspheres
Colors: 
We stock samples of clear microspheres, white polyethylene spheres, black magnetic microspheres, colored microspheres, UV fluorescent spheres.
Custom color microspheres by request.

Color Matching: We can color match polymer microspheres to any color, including skin-color micropsheres as shown. Colour-matched microspheres can be opaque and UV fluorescent as needed, and in any diameter from 10micron on up to 3000micron (3mm).


Half-coated Magnetic Beads
Charge/Magnetic Properties: Custom polymer microspheres can be  made positively or negatively charged. Positive or negative charge is internal to each microsphere and permanent. It will not dissipate over time and can not be grounded.

Black microspheres can be made magnetic or static-dissipative. Black magnetic coating on a portion of the microsphere creates functionalized hemispheres (magnetic half-shells) that enable manipulation of microspheres with magnetic field.

 
Pink Metal Coated Glass MicrospheresCoatings: Full or partial coatings on polymer microspheres offer additional colors, functionalities, triboelectric charge, surface and magnetic properties.  Achieve bipolar and bichromal microspheres that orient themselves to align in electric field and show visual response to stimuli.

Manufacturing Process:
No solvents or volatiles are used.
Pigments and additives can be incorporated as needed.
Polyethylene microsphere manufacturing process is economical and scalable to large volumes.


Order R&D vials of solid polymer microspheres in stock or contact us to get a quote for custom microspheres.

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BK-W-HSMS - Black and White Bichromal Microspheres WPMS - Opaque White Microspheres - R&D Vials VIOPMS - Violet (Purple) Polyethylene Microspheres - 1.00g/cc - R&D Vials
Coated Spheres. Black and White Hemispherically Coated Spheres (Bi-Chromal) White Microspheres Polyethylene 10-1000um (1mm) Violet Polymer Spheres, Purple Microspheres Samples, Purple Spheres for Fluid Flow, Coloured Spheres for Fluid Flow - Density 1g/cc
PNKPMS - Pink (Magenta) Polyethylene Microspheres - 1.00g/cc - R&D Vials ORGPMS - Orange Polyethylene Microspheres - 1.00g/cc - R&D Vials YPMS - Yellow Polyethylene Microspheres - 1.000g/cc - R&D Vials
Pink Polymer Spheres, Magenta Microspheres, Magenta Polymer Spheres, Pink Microspheres Samples - Density 1g/cc Orange Microspheres Samples - Specific Gravity 1g/cc - Fluid Flow Visualization Studies Yellow Microspheres Polyethylene 10-1000um (1mm), Yellow Spheres, Fluid Flow Visualization, Testing of Medical Devices
GRYPMS - Opaque Grey Polymer Microspheres - 1.00g/cc - R&D Vials PHYPMS - Phosphorescent Microspheres - Yellow-Green - R&D Vials CPMS - Clear Polyethylene Microspheres - R&D Vials
Opaque Grey Polymer Microspheres for Fluid Flow Experiments, Specific Gravity 1g/cc for Suspension in Water Phosphorescent Microspheres Polyethylene 10-600um Clear Microspheres Polyethylene 10-1000um (1mm)
BLPMS - Opaque Blue Microspheres - 1.00g/cc - R&D Vials BLPMS-1.075 - Blue Polyethylene Microspheres - 1.075g/cc - R&D Vials BKPMS - Black Paramagnetic Microspheres - R&D Vials
Opaque Blue Polymer Microspheres. Blue Polyethylene Spheres. Blue Polymer Spheres. 10 micron, 100 micron, 500 micron, 1000 micron, 1mm. Flow Studies. Flow Visualization Translucent Blue Polymer Microspheres. Blue Polyethylene Spheres. Blue Polymer Spheres. 10 micron, 100 micron, 600 micron, Flow Studies. Flow Visualization Paramagnetic Black Microspheres.
GPMS - Green Polyethylene Microspheres - R&D Vials REDPMS - Red Polyethylene Microspheres - 0.98g/cc - R&D Vials REDPMS-1.065 - Red Polyethylene Microspheres - 1.065g/cc - R&D Vials
Green Microspheres Polyethylene 10-1000um (1mm) Red Microspheres Polyethylene 10-1000um (1mm) Red Polymer Microspheres 20-600um, Specific Gravity of 1.065g/cc
UVPMS-BG-1.025 - Fluorescent Green Microspheres - 1.025g/cc - R&D Vials UVPMS-BY - Fluorescent Yellow Microspheres - 1.00g/cc - R&D Vials UVPMS-BR-0.995 - Fluorescent Red Microspheres - 0.995g/cc - R&D Vials
Fluorescent Microspheres Polyethylene (Fluorescent Green in daylight, Green in 365nm UV) 200 micron to 1000 micron Diameter Fluorescent Microspheres Polyethylene (Fluorescent Yellow in daylight, Yellow in 365nm UV) 10 micron to 1000 micron Diameter Fluorescent Red Microspheres Polyethylene (Fluorescent Red in daylight, Yellow in 365nm UV) 250 micron to 355 micron Diameter, 0.995g/cc density
UVPMS-BG-1.00 - Fluorescent Green Microspheres - 1.00g/cc - R&D Vials RHBPMS - Microspheres - Rhodamine B - R&D Vials UVPMS-BO - Fluorescent Orange Microspheres - 1.00g/cc - R&D Vials
Fluorescent Microspheres Polyethylene (Fluorescent Green in daylight, Green in 365nm UV) 45 micron to 500 micron Diameter Fluorescent Microspheres Polyethylene (Rhodamine B) 10-1000um Fluorescent Microspheres Polyethylene (Fluorescent Orange in daylight, Yellow in 365nm UV) 250 micron to 355 micron Diameter
UVPMS-BY2 - Fluorescent Yellow Microspheres - 1.00g/cc - R&D Vials UVBGPMS - Fluorescent Blue Green Microspheres - 0.98g/cc - R&D Vials Bi-chromal Microspheres (Custom Color)
Fluorescent Microspheres Polyethylene (Fluorescent Yellow in daylight, Yellow in UV) 20um to 1000 micron Diameter Fluorescent Microspheres Polyethylene (Fluorescent Yellow in daylight, Blue-Green in UV) 10-1000um Bi-chromal Polyethylene Microspheres, Hemispherically Coated Spheres, Coated Spheres, Magnetic/Conductive Half-shells on Microspheres. Orient spheres in electric field.