bioSilica Beads Non-porous silica beads are useful in molecular biology and immunoassays. Diameters are 0.3-5.0 µm, a density of 1.96g/cm 3 , a refractive index (589nm) of about 1.37. Silica beads have high temperature stability. Also, because hydrophilic silica does not absorb proteins,…