This Thermo Scientific® ELED Nuova magnetic magnetic stirrer requires 120V, and is ideal for culture media preparation and slow speed stirring of culture media. Die cast aluminum case provides durability. Excellent low speed stirring (100rpm) can be achieved by turning the control knob to setting 1. Topside drip edge protects internal components from spills. Stirrer accommodates up to 20lbs (9.1kg) load. Integral ring stand holder to accommodate a 0.5in (1.3cm) diameter support rod and TFE stirbar included. Recommended for use with glass vessels only. Stirring Speed Range: 100 to 1000rpm. Top Plate Dimension: 7 x 7-Inch. Overall Dimensions (L x W x H): 8.6 x 11.8 x 4.5in. Voltage Rating: 120V. Frequency: 50/60Hz. Power Rating: 11W. Current Rating: 0.1A. Warranty: Three years. Certifications: cUL Listed.Thermo Scientific® ELED #: S18525Q. Thermo Scientific ELED - “Every Lab, Every Day”.