Litmus paper being dipped into an alkaline solution. Litmus paper is either red or blue (as here). The red form turns blue in alkalis. The blue form turns red in acids | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 4500 px × 4500 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |