An ultracentrifuge based on the air turbine of a dental drill attains 400,000–600,000 rpm and a centrifugal force 2 to 3 million ×g. It is used for the examination of cell suspentions and homogenates and can be applied to macromolecular solutions. Microcuvettes with volumes ranging from less than 1 mm3to 0.001 mm3(suitable for single cells) are of disk and square capillary form and are made of polycarbonate or glass. A special microscope is used to obtain a stopped image of the rotating cuvette. A new method to preserve the centrifugal state of the contents is tested: deep freezing of a rotating cuvette for subsequent freeze‐drying and microscopical examination. Experiments on cells include centrifugal intercellular movement of nuclei and cytoplasmic particles, cell fusion, and homogenization.