Silica Microspheres, streptavidin-modified, 1% solids, 1.0µmStreptavidin-modified microspheres bind biotinylated ligands easily and with great affinity. They are offered as a 1% dispersion in water.These silica microspheres are available with a nominal diameter of 1.0µm to allow the researcher to tailor his/her product design for specific assays.Our non-functionalized silica microspheres are also available in a wide range of sizes. Polysciences' uniform, non-porous silica microspheres are available in diameters of ~150nm to 5µm. The particles typically have size CVs of 10-15%. For applications that require highly stringent CVs (e.g. 2-5%), call for product availability. They are suitable platforms for surface modification with functionalized organosilanes to introduce specific binding sites.Custom synthesis is available on request for specialty products.