The Rotospin rotary mixers are digital electronic equipment which brings about the mixing of the components in a liquid or liquid mixtures. Rotospin rotary mixers are specially designed tubes and in some cases even bottles which can be loaded onto the machine with the sample in them. The movement can be brought about at various speed and for various time length both of which are adjustable. In some advanced versions, not only rotary but movements and motions of various types can also be brought about.