Abstract: A set of crystallization solutions includes a plurality of crystallization solutions of Crystallization Solution Set I, a plurality of crystallization solutions of Crystallization Solution Set II or a plurality of crystallization solutions of Crystallization Solution Set III.

Abstract: A crystallization system includes a well plate and a cover for the well plate, at least one of the well plate and said cover includes at least a transparent window. The well plate including at least one well comprising a bottom surface including a first essentially planar bottom surface section and a second essentially planar bottom surface section in a first bottom plane and a well border wall provided by a well border edge surrounding the planar bottom surface section: The cover includes a first essentially planar top surface section in a first top plane adapted to face the first essentially planar bottom surface section. The first and the second essentially planar bottom surface sections are totally or partly separated by a liquid barrier, provided by one or more of a low tension surface barrier, a ridge and an indentation.

Abstract: A set of crystallization solutions includes a plurality of crystallization solutions of Crystallization Solution Set I, a plurality of crystallization solutions of Crystallization Solution Set II or a plurality of crystallization solutions of Crystallization Solution Set III.

Abstract: A method of producing a microfluidic device for promoting target molecule crystallization growth for example for growth of macromolecules such as proteins, nucleic acids and/or carbohydrates Also, a microfluidic device for promoting crystallization of a target molecule from a solution of said target molecule and a liquid precipitant.