Crystallization and precipitation: Time optimal supersaturation

In this article the optimal supersaturation for cooling and evaporation cry stallization are presented. This information is based on a simplified model which describes the metastable zone width of activated nucleation. The mod el assumes that the nucleation step is very fast and the occurrence of the shower of nuclei which is used to define the metastable zone width is cause d by the growth of activated nuclei. In future new sensors for the measurem ent of supersaturation will help to operate batch crystallizers at the opti mal supersaturation during the entire batch time.