Made of high density glazed white ceramic and enclosed in a hinged, impact resistant plastic case, the Tanaka Opaque Tray is designed for long-lasting, efficient use and convenient storage. 15 deep, round mixing wells ensure less frequent mixing and less surface evaporation of opaque liquid. Ideally suited for use with the AT4 Opaque Instrument, opaques and modifiers can be mixed in each well with Tanaka Thermo-Dri™ Opaque Liquid and kept wet indefinitely for reduced waste and greater production efficiency.