AC synchronous motor for noiseless operation. Can accommodate upto 22 Blood collection tubes. Circular motion gives gentle but effective mixing. Fixed speed of 30 RPM with an accuracy of +/-2 RPM. Continuous / infinite Time mode of operation. Robust construction with strong metal frame. Plate option 22 x 15 ml or 4 x 50 ml + 12 x 15 ml. Compact Design - saves bench space. Protection class of IP 21. Easy to remove and install plates for replacement and cleaning. Maximum operational weight capacity of 1kg.