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Tube centrifuges are mainly used to separate solid particles from liquids in suspensions. Or, separating two immiscible liquids with different densities in an emulsion (such as separating cream from milk) ； It can also be used to remove liquid from wet solids, such as when washing clothes in a washing machine ； Specialized supersonic tube separators can also separate gas mixtures with different densities, such as for the concentration and separation of gaseous uranium hexafluoride ； Some sedimentation separators are also capable of sorting solid particles based on density or particle size, as they have different settling speeds in liquids. Desktop separators are widely used in industries such as chemicals, petroleum, food, pharmaceuticals, mineral processing, coal, water treatment, and shipbuilding. Before operation, the tubular centrifuge should have its power supply disconnected and the external brake released, so that the drum can be rotated by hand to check for any jamming conditions. Check other parts for looseness and any abnormal conditions. Turn on the power and start it counterclockwise (it usually takes 40–60 seconds to go from a halted state to normal operation). Typically, each piece of equipment must run idle for about 3 hours after arriving at the factory before it can operate properly. A centrifugal separator equipped with a stack of conical discs, which separates emulsions and low-concentration suspended components through centrifugal sedimentation. Disk separators can operate under sealed, high-temperature, low-temperature, pressurized, and vacuum conditions, and are used for extracting cream from milk, purifying fruit juices and beers, animal and vegetable oils as well as transformer oil, concentrating yeast, and extracting serum from animal plasma. The suspension enters the drum through the central feed pipe, and moves from the outer edge of the disk bundle to the inner edge of the disks via the gaps between the disks. Due to the effect of centrifugal force, solid particles, while moving along with the liquid, precipitate onto the inner and outer surfaces and faces of each disk; they then slide to the outer edge of the disks and accumulate on the drum wall. The clarified liquid is collected at the center of the drum and discharged through an overflow port or a centripetal pump.