Density: 1.02-1.03g/cc
Daylight Color: Fluorescent Green (515nm Peak)
Fluorescent Response: Peak emission of 515nm when excited at 414nm

Microspheres vs Micropellets vs Microparticles:

Microspheres: >90% of particles are spheres
Micropellets: >90% of particles are spheroids (sphere-like but not perfectly spherical body)
Microparticles: >90% of particles may have irregular shapes

Polyethylene microspheres, micropellets, and microparticles 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

Dawson, A.L., Kawaguchi, S., King, C.K. et al. Turning microplastics into nanoplastics through digestive fragmentation by Antarctic krill. Nat Commun 9, 1001 (2018).

Xu, Y., Qi, F., Mao, H. et al. In-situ transfer vat photopolymerization for transparent microfluidic device fabrication. Nat Commun 13, 918 (2022).