Fluid layering device

摘要: A fluid layering device for use with a syringe to facilitate liquid from the onto denser contained in an open-top centrifuge tube. fitting is releasably attachable receiving therefrom. An elongate nozzle carried on has pair of opposed end faces, and flow-constricting bores communicating associated faces received fitting. annular step formed engageable by friction fit tube's upper open hold at axially aligned position within At this position, each confronts, spaced from, inner wall portion tube clearance which adapted produce, being forced through bore nozzle, controlled-flow ribbon down surface