The Nunc-immuno Modules System is specifically designed for quantitative solid-phase immunoassays. The system consists of modules and frames. When modules are assembled in a frame they are equivalent to a standard 96 well plate. Modules are available in round, flat or C bottom wells. Select from three surface treatments: MaxiSorp surface for assays requiring a high affinity for polar groups. PolySorp surface is less polar than MaxiSorp surface. It has a higher affinity to molecules of a hydrophobic nature. CovaLink surface for covalent binding of functional biochemical groups to polystyrene. 0.35 mL well size.