NanoLink® 1.0 µm Streptavidin Magnetic Beads have the highest biotin binding capacity on the market. Higher binding translates into reduced bead mass required to immobilize a biotinylated sample and lower background noise from nonspecific binding, resulting in better signals and lower net costs. NanoLink® Streptavidin Magnetic Beads are 1.0 µm in diameter and bind at least 14 nmol of free biotin per milligram of beads.