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/cm3, a refractive index (589nm) of about 1.37. Silica beads have high temperature stability. Also, because hydrophilic silica does not absorb proteins, silica microspheres are used in immunoassays where a low non-specific protein binding is needed. These are used to adsorb DNA, RNA and oligonucleotides. They can be used for many chromatography applications.
bioWorld provides custom activation and ligation of various ligands to bioSilica beads (please inquire).