Sapphire Labs

Crystal Clay Metal Toxicity Environmental Science Experiment

By using the regular Crystal Clay classroom kits and adding special metal solutions, students can observe toxic effects on the growth of several plant types. We used aluminum, copper, iron, zinc, sodium, and potassium solutions calibrated for a range of metal concentrations from 5 to 100 ppm.

Click on the pictures below to see metal taking effect.

Students can be challenged to develop their own study design, or follow the experiment based on what is shown here.

This experiment is currently being used in college classes to give students a realistic view of how metals effect both foliage and root growth in nature.

For use only with the Crystal Clay classroom kits.


Sodium
Copper
Aluminum
Nickel
Iron
Potassium
Zinc