Strips of universal indicator paper change colour depending on the pH of a solution. Here,one indicator strip has been immersed in an acidic solution (orange) while the other one has been immersed in a basic solution (green) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 3410 px × 5144 px |
Model Release : | Non requis |
Restrictions : |
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