Many of our classroom demonstrations such as the Groundwater Model Bucket Kit and Density Tank Lab Demonstration utilize colored tracers to help students see the flow of geophysical fluids. We noticed that it is getting more difficult to find plain food coloring in the store as bakers seem to be favoring gel colorings. This pack of plain food coloring concentrate includes the classic red and blue colors for great contrast and to make your demonstrations pop.Each bottle has a dropper top to help meter how much dye is used. The bottles hold 10 mL of each color which is enough for a lot of lab activities! Each package is heat sealed after being individually filled from bulk stock.
