The StarWell Immuno Module design features the precise placement of eight fins on the inner wall of a C bottom well. The inside well bottom is a modified C design, which better facilitates washing and coating. The deliberate orientation of the eight fins ensures compatibility with most MicroWell plate instrumentation and aspiration systems. The addition of the eight fins inside the well increases the surface area by 50%. This increase in surface area allows more molecules to be immobilized, increasing assay signal.