Acid Rock Drainage – GlacierXperience

Material:

Fill the tubes halfway each as follows:
Tube 1: tap water
Tube 2: approx. 1 cm high pyrite and tap water
Tube 3: distilled water
Tube 4: approx. 1 cm high pyrite and distilled water
Close the tubes and shake everything well. Then let everything stand for about 5 minutes.
Fill a test tube approx. 2 cm high with the solution from tube 1, into a second test tube approx. 2 cm high with the solution from tube 2, etc.
Add 2 drops of the universal indicator to each test tube and swirl gently.