Model SI6-2 Shaking Incubator, Adjustable Orbit, Microprocessor Control, 5.5 Cu.Ft. The SHEL LAB Incubator Shakers are fine examples of our Constant Thinking. These incubators will provide a controlled environment for continuous growth of biological organisms. Market applications include: microbiology, tissue culture, cell culture and bacteriology.The SI6 and SI6R feature our unique counter balance weighting system that is adjustable to accommodate off-center loads, varying capacities and stroke lengths, which in turn allows for smoother operation. An adjustable orbit allows the user to change the rotational stroke from 0.5Ó (vigorous shaking) to 1Ó (gentle shaking) to accommodate different types of cells and to provide maximum oxygen transfer. The SI6 has a small footprint and its chamber provides shelf space for static incubation during shaking. The SI6R refrigerates via a 1/6-horsepower motorized compressor (produced without CFCs/HCFCs).All major functions -- temperature, RPM and time -- have alarms that alert the user to deviations from set parameters. Overtemperature protection is provided via a safety thermostat. Digital keypad operation offers the ability to calibrate the temperature controller to a reference thermometer. To better support the load over years of constant use, we utilize four load bearing positions for optimal weight distribution. Features include: