ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY ANDREW LAMBERT PHOTOGRAPHY / SCIENCE PHOTO LIBRARY
Iron test. Potassium thiocyanate (KSCN) being added to a test tube containing a solution of iron (III) ions and water. The solution of iron ions and water has a yellow colour. As the potassium thiocyanate is added, the solution turns a deep red. This is a result of the formation of a thiocyanate complex ([FeSCN]2+). A bottle of potassium thiocyanate is next to the test tube rack.
Model release not required. Property release not required.