These platform shakers provide a 3-dimensional "nutating" motion for moderately aggressive mixing. Two platform sizes and two rubber mat configurations allow for thorough, foam-free mixing in blood tubes and centrifuge tubes, as well as in a variety of flat vessels. Both models come standard with autoclavable dimpled mats for tubes. Optional flat mats are available for mixing other vessel types. Stacking platforms are also available, effectively doubling the usable surface area of each model. Even the smallest single platform configuration has 24% more platform work surface than traditional nutating mixers. The MiniMixer™ and BioMixer™ can handle loads up to 2kg. Both have maintenance free brushless motors and are safe for use in cold rooms and incubators.