Universal indicator. Universal indicator changes its colour depending on the pH of the solution. Here universal indicator has been added to three beakers containing solutions with varying pH values, left to right: alkaline (blue, pH=12, 0.01M potassium hydroxide, KOH), neutral (green, pH=7 buffer solution), acidic (red, pH=2, 0.01M hydrochloric acid, HCl). | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Science Source / Turtle Rock Scientific |
Taille de l’image : | 5126 px × 3422 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |