For the higher initial dextrose concentration of 67.5%, Fig. 7a shows the highest increase in supersaturation at around 6 h, after which there is a very rapid decrease in supersaturation. The particle counts data in Fig. 7b shows the highest counts for the higher initial dextrose concentration of 67.5%, inferring that the highest levels of nucleation occurred during this trial. One explanation for the higher nucleation observed in the 67.5% trial is that the higher levels of supersaturation caused higher levels of secondary nucleation. The high levels of nucleation created many new crystals which greatly increased the surface area available for crystal growth and it is this additional crystal surface area that resulted in the increased crystallization rate and rapid reduction of dextrose in solution.