Microtest polystyrene assay plate. Standard untreated surface, U-bottom, no lid. 100 - 250 Microliter typical working volume. Non-sterile. Injection molded from crystal-grade polystyrene for easy microscopic viewing, Falcon assay plates are available with U-bottom or flat bottom wells. For enhanced assay consistency, plates are manufactured from a well-characterized polystyrene formulation. Dimensional checks are made frequently during manufacturing. Variation in absorbance readings due to plate dimensional tolerances do not exceed a coefficient of variation (CV) of 3 percent on non-sterile flat-bottom plates. All plates have 96 x 0.30mL well volume. Does not include lids. Standard untreated polystyrene plates are hydrophobic. Easy-grip serrated base (on long sides only) compatible with human and robotic hands. Alphanumeric notation system for well identification. 96 well size. 300 microliter total well capacity.