This Corning Costar 3603 96-Well x 360µL Clear Flat Bottom Microplate w/ Lid is in new, unused condition and is guaranteed to be fully functional. These factory sealed plates came from a local lab that had surplus inventory. Please feel free to contact us with any questions. Black 96-well polystyrene microplate has clear flat bottom wells that are 60% thinner than conventional plates, resulting in lower background fluorescence and enabling readings down to 340nm Individually wrapped microplate has a total well volume of 360µL and a recommended working volume of 75 to 200µL with a cell growth area of 0.032/cm2 Sterilized by gamma radiation and certified nonpyrogenic; opaque walls prevent well-to-well crosstalk Optically clear flat well bottom permits direct microscopic viewing; can be used for both top and bottom reading instruments