Universal indicator paper. Universal indicator changes its colour depending on the pH of the solution. Here, left indicator strip has been immersed in an acidic solution (pH=2, 0.01M hydrochloric acid, HCl), centre strip has been immersed in a neutral solution (pH=7 buffer solution), and right strip has been immersed in a basic solution (pH=12, 0.01M potassium hydroxide, KOH). | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Science Source / Turtle Rock Scientific |
Taille de l’image : | 3432 px × 5160 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |