Orbital and Reciprocal Shaker LORS-A10 Labtron Orbital and Reciprocal Shakers, versatile dual-action shakers featuring variable speed control from 30 to 300 rpm and a 22 mm shaking orbit. With a digital LED display, micro-computer control and a timer of up to 4 hours, these maintenance-free shakers provide quiet, reliable operation, making them ideal for various laboratory applications, including molecular biology and chemistry.