The Qdot™ 525 ITK™ Streptavidin Conjugate Kit provides the Qdot™ streptavidin conjugate as 250μL of a 2μM solution. Unlike the Qdot™ streptavidin conjugates, the Qdot™ ITK™ streptavidin conjugates have the streptavidin covalently attached to the inner am