Universal indicator added to a beaker containing an acidic solution (vinegar). Universal indicator changes its colour depending on the pH of the solution | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 3408 px × 5130 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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