2.8. Relative impurity of the ice
Theimpurityoftheicewasdeterminedas theconcentrationofsoluble
solids(measuredin°Brix)fromtheliquidphasethatremainsintheiceafter
freezingandtherefore reduces itspurity.The relativeimpurityof theiceis
defined as the ratio between the concentration in the ice and the
concentrationintheconcentratedjuiceattheendofeachtest:
impurity ratioð%Þ =
Cice
CFS
100 ð5Þ
where CFS is the concentration of soluble solids in the solution and Cice
is the concentration of soluble solids in the ice at the end of each
experiment.