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Bright red 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 the openings, filters and membranes. The density of these particles ensures that they will float on the surface in an aqueous solution. The bright red coloration ensures high visibility.
Other colors, sizes and grades of polyethylene spherical particles are available:
Polyethylene Microspheres (Colors, Fluorescent, Phosphorescent, Barium Sulfate)
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.
Material Safety Data Sheet - Polyethylene
Spheres, Beads, Microspheres, and Nanospheres
Red Fluorescent-Coated Glass Microspheres - Various sizes and densities
Pink Cellulose Acetate Polymer Spheres - Large Plastic Beads ~1.3g/cc - 2.9mm
Fluorescent Red Polyethylene Microspheres 1.050g/cc - 45um to 500um (0.5mm)
Red Polyethylene Microspheres 1.080g/cc - 50um to 600um (0.6mm)