Time courses of equilibration for ammonium sulfate, sodium chloride and magnesium sulfate heptahydrate in the Z/3 crystallization plate.

Time courses of equilibration for three salts, sodium chloride, ammonium sulfate and magnesium sulfate heptahydrate have been measured in the Z/3 crystallization plate. It is shown that by varying both the diffusant and the reservoir depth the time taken to equilibrate can be as short as 200 or as long as 1400 h. Thus, the present design of the plate should accommodate a wide variety of desired crystallization kinetics.