Testing tomato juice for acidity. Universal indicator changes its colour depending on the pH. Here a universal indicator paper strip has changed colour from yellow to red after it was dipped into tomato juice. The test shows that tomato juice is acidic. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Turtle Rock Scientific |
Taille de l’image : | 3389 px × 5149 px |
Model Release : | Non requis |
Restrictions : |
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