Qualitative and Quantitative Analysis of Food Dyes
Step 1 - Dye Separation
In this step, the dye mixture is poured into the column for separation. Once
in the column, water is added and the dyes begin to move down the column.
The blue dye is more strongly attracted to the particles in the column and
moves more slowly, while the red dye is more strongly attracted to the water
and thus moves more quickly through the column. This difference in speeds
allows the dyes to be separated for further analysis.
The animation below will illustrate this technique.