Litmus paper being dipped into an alkaline solution. Litmus paper is either red (as here) or blue. The red form turns blue in alkalis. The blue form turns red in acids | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Andrew Lambert Photography |
Bildgröße: | 3189 px × 4379 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |