The 384 Well Plate with lid has the same external dimensions as a 96 well plate with a 24 x 16 well format. Each well measures 4.5mm center to center making it compatible with robotics and manual multichannel pipettes. The 384 Well Plate is ideal for arraying nucleic acid libraries in high volume labs using robotics. One 384 Well Plate is equal to four 96 well plates, maximizing freezer space. The OmniTray is a single-well plate with lid having the same external dimensions as a 96 well plate, allowing geometric indexing. The OmniTray can hold a hybridization membrane for use in screening DNA libraries, using either robotics or manual plating. It has excellent optical clarity enhancing read-through optics for colony and plaque detection.