This Corning 96-well robolid is made from polystyrene with a corner notch. It combines the sealing ability of a storage mat with the rigidity of a plastic lid. It is designed for repeated application and removal by automation and to prevent short term evaporation. It has silicone sealing plugs for organic solvent resistance and low extractables. Can be used manually or with automation. Includes lid. Nonsterile. Fits 96-Well Microplates. Material: Polystyrene. Plate Format: Lid. Surface Treatment: Not Treated. Corning #: 3090.