Iron test. Iron (III) solution (yellow) being compared to ferric thiocyanate (red). Ferric thiocyanate is the result of the reaction between iron (III) and potassium thiocyanate. This colour change (from yellow to red) can be used to indicate the presence of iron (III) ions in an unknown solution | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Andrew Lambert Photography |
Taille de l’image : | 3586 px × 4909 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |