Universal indicator paper being dipped into an acidic solution. Universal indicator changes colour in acidic or alkaline solutions,turning from yellow to red or blue respectively | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Andrew Lambert Photography |
Bildgröße: | 3573 px × 4896 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |