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Grey polyethylene 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. These spherical polymer particles are specifically designed with density ~1g/cc for suspension in fresh water, enabling flow visualization and PIV analysis of fluid flow in a device. It is often advantageous to color code the particles by size 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.
Other colors, sizes and grades of polyethylene spherical particles are available:Polyethylene Microspheres (Colors, Fluorescent, Phosphorescent, Barium Sulfate)
Other neutrally buoyant particles for flow visualization and PIV are available:Microspheres for Flow Visualization and PIV (1.0g/cc)
1.00g/cc (0.99g/cc-1.01g/cc) for suspension in water
Particles in Size Range: >90%
Spherical Particles: >90%
Polyethylene microspheres are hydrophobic and suspend easily in oil-based solutions. They can also be suspended in aqueous solution if coated with a surfactant prior to suspending in water. We recommend using Tween 80 or Tween 20 Surfactants.
Microspheres are supplied in dry
powder form and are color stable in solution. No solvents are used in
the manufacturing process. Polyethylene is inert to most solvents.
Material Safety Data Sheet - Polyethylene
Spheres, Beads, Microspheres, and Nanospheres
Conductive Silver-Coated Poly(Methyl Methacrylate) PMMA Microspheres 1.2g/cc-2.3g/cc - 5um to 700um (0.7mm)
White Polyethylene Microspheres - 10um to 1200um (1.2mm) - 1.00-1.45g/cc
Black Paramagnetic Polyethylene Microspheres 1.2g/cc - 10um to 1400um (1.4mm)