Testing lemon 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 put in contact with a freshly sliced lemon. The test shows that lemon is acidic. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Turtle Rock Scientific |
Bildgröße: | 4888 px × 3411 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |