Falcon® 96-well Microplate is comprised of clear not treated polystyrene. Round bottom, 5/pack, 50/case. Lids are not included. Crystal-grade virgin polystyrene Nonpyrogenic Non-treated polystyrene Falcon 96-well microplates are compatible with automation systems and meet standard ANSI/SBS footprint dimensions for microplates Working volume of Media is 0.1-0.2 mL