Sample Preparation Equipment encompasses a range of instruments essential for preparing biological and chemical samples for analysis. This category includes centrifuges, which are used to separate mixtures by applying centrifugal force, allowing for the isolation of specific components such as cells, proteins, or nucleic acids based on their size, shape, and density. Additionally, electrophoresis and power supply systems are crucial for separating macromolecules like DNA, RNA, and proteins according to their size and charge, with the power supply providing the necessary electrical current to drive the electrophoretic process. Furthermore, gradient PCR instruments are employed to optimize annealing temperatures across a gradient, facilitating the amplification of DNA with high specificity and efficiency.