Not treated (or medium binding) polystyrene surface is hydrophobic in nature and binds biomolecules through passive interactions, Suitable primarily for the immobilization of large molecules, such as antibodies, that have large hydrophobic regions that can interact with the surface, Untreated microplates have a binding capacity of approximately 100 to 200ng IgG/cm², Without lids, lids supplied separately, Total vol is 320 µL; recommended working vol of up to 75 to 200 µL, Conforms to standard microplate footprint and dimensions