This listing is for one Molecular Sensing TruBind 100 Back Scattering Interferometry Interferometer BSIThe TruBind BSI System 100 is the world’s first free solution, label-free biosensor that detects changes in molecular conformation that arise from molecular aggregation, molecular binding, or molecular solvatic (hydration) effects. Recently removed from large lab closure. Comes as pictured, in good physical condition. Please note, we unfortunately don't have the PC, software or manual for this system. Because of this, we are selling it as-is, with no returns offered. Please make sure this works for your needs before purchase.