a protein crystal growth assembly including a crystal growth cell and further including a cell body having a top side and a bottom side and a first aperture defined therethrough , the cell body having opposing first and second sides and a second aperture defined therethrough . a cell barrel is disposed within the cell body , the cell barrel defining a cavity alignable with the first aperture of the cell body , the cell barrel being rotatable within the second aperture . a reservoir is coupled to the bottom side of the cell body and a cap having a top side is disposed on the top side of the cell body .