Pretreated Polystyrene Culture Plates These polystyrene plates are tissue culture-treated for optimum cell attachment and growth and pretreated with 50 μg/mL PDL for 24 hours. Optically clear plates are compatible with most automatic diluters, readers, and pipettors. Raised well rims, lid rings, and recessed areas prevent cross-contamination and reduce evaporation. Uniform wall thickness ensures distortion-free well bottoms. Well positions are labeled with alphanumeric markings. Gamma radiation sterilized. Certified nonpyrogenic.