Manually operated turntable guarantees smooth and easy rotation in both directions. Also enables easy and fast allocation of bacteria across petri dish surface. Double-sided construction accomodates petri dishes from 60 to 150 mm diameter by inverting the turntable. Ball bearings provide smooth and effortless spinning, ensuring rapid inoculation steps and extended operation life. Light weight but robust body manufactured from aluminum with non-skid footprint. The silicone pad holds the petri dishes firmly and always keeps the dish centered during inoculation steps. The non-skid pad can easily be removed for fast and efficient cleaning.