Iris Orbital/Reciprocating Shakers are designed to stir or mix liquid samples in a circular, swirling motion, creating a vortex effect inside the sample container, which is ideal for a number of general lab applications including mixing reagents. Our orbital shakers offer user-friendly operating and safety features for reliable shaking of glassware and other lab vessels of various shapes and sizes. The variable speed control allows gentle to vigorous agitation and aeration, while the digital timer function allows for automatic run at any specific length of time. These laboratory shakers have a large selection of optional features and accessories available to meet the need of any application.