Centrifuges for medical use for preparing platelet rich plasma and other physiological products; final packs for medical use, namely, an aspiration kit having syringes, needles, needleless bag access spikes, cannulas, and transfer bags, and a procedure pack comprised of anticoagulant and a processing unit comprised of a sterile disposable container having at least one compartment for receiving a physiological fluid and for being received in a centrifuge for subjecting the physiological fluid to centrifugation, sold as a unit; processing kits, namely, processing units comprised of a sterile disposable container having at least one compartment for receiving a physiological fluid and for being received in a centrifuge for subjecting the physiological fluid to centrifugation, syringes and fluid cups, sold as a unit for medical use; applicators for mixing and applying physiological fluids to a patient, namely, medical syringes, a handle for holding the syringes, and an applicator for connecting to the syringes, sold as a unit