See Saw Rocking Shaker LSSR-A30 Labtron See Saw Rocking Shakers utilize a unique see-saw motion for effective sample mixing. With a speed range of 5-70 rpm and a timer up to 120 minutes, they operate at temperatures from 4°C to 40°C. The LED display provides error messages, while their compact design allows stacking of additional platforms for increased sample capacity, making them ideal for culture flasks and Petri dishes.