Falcon® 24-well Clear Multiwell Plate is comprised of clear not treated polystyrene. Flat bottom, with low evaporation lid, individually wrapped, sterile, 50/case Crystal-grade virgin polystyrene Nonpyrogenic Non-treated polystyrene Convenient, peel-open medical-style packaging for individual product presentation Individual trays are PET (Code 1) and recyclable Working volume of Media is 0.8-1 mL Working volume of Trypsin is 0.08-0.1 mL (Your lab protocol may call for another proteolytic enzyme.)