What Is The Concentration Of Food Coloring?

What Is The Concentration Of Food Coloring? Food Coloring Maximum Concentration Peak Location/Absorbance: Minimum Concentration Blue1 drop/30 mL 633 nm/.174 269 nm/.127 Yellow 1 drop/40 mL 432 nm/.038 265 nm/.058 Orange** 1 drop each red and yellow/160 mL 424 nm/.079 269 nm/.043 Green 1 drop/25 mL 631 nm/.053 419nm/.035 What is the composition of food