Figure 9. Analyzed sherbet powder candies (left), salt of the carminic acid undissolved (middle) and dissolved in sodium hydroxide solution (right)

From

An Experimental Introduction to Basic Principles of the Interaction of Electromagnetic Radiation with Matter

Patrick Schairer, Stephan Wagner, Ekkehard Geidel

World Journal of Chemical Education. 2018, 6(1), 29-35 doi:10.12691/wjce-6-1-6