Universal indicator paper being used to test the pH of dilute sulphuric acid (in beaker). The paper has turned red,indicating a pH of 1 - 2 (as shown on the comparison strip) and a strong acid | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Trevor Clifford Photography |
Bildgröße: | 3872 px × 2592 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
|