The two equations formulated can predict reasonable gravity purity of final molasses quite accurately from juice analysis. The first, based on the juice chloride, will give results within plus or minus 0. 50 units in 77. 1% of cases and can well be recommended for predicting gravity purity of final molasses for daily control two days in advance of its actual production. thus, any expected deviation for normal final molasses purity can be taken care of well in advance. The second equation based on chloride content and the reducing sugars: ash ratio is more accurate and can predict results within plus or minus 0. 50 units in about 87. 1% of cases.