A wide variety of laboratory-scale centrifuges are used in chemistry, biology, biochemistry and clinical medicine for isolating and separating suspensions and liquids. “D” series of Denagene centrifuges are highly professional and advanced for molecular biology tasks, mainly cloning the genes. Users can separate and mix their samples in the fully programmed manner. For the mixing operation they can define 3 types of vortex: Soft, medium, or hard. For centrifugation operation it can control the RPM from 2000 to 10000. And also for each operation its timing is especially managed. Ultimately user can define how many cycles the process should be repeated. In fact, a fully programmed system for separation and mixing the samples is here in the “D” version of centrifuges.