Litmus paper being dipped into an acidic solution. Litmus paper is either blue (as here) or red. The blue form turns red in acids. The red form turns blue in alkalis | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Andrew Lambert Photography |
Bildgröße: | 3563 px × 4909 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |