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Powered laboratory turntables designed for microorganism inoculation in Petri dishes. The turntables typically consist of an electric rotatory mechanism to provide a circular motion to an upper platform allowing even distribution of bacterial colonies in Petri dishes. The upper platform usually includes and anti-skid surface where the Petri dish (up to 10 or 15 cm/4 to 6 inch diameter) is placed. The turntable typically includes on-off, rotation speed, and time controls to improve uniform plating of the dishes. Powered Petri dish turntables are intended to facilitate the placement of concentric circles of microorganisms (e.g., bacteria) from the edge of the dish to its center.
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