Universal indicator paper. Strips of universal indicator paper that have been dipped into solutions of various pH values (hydrogen ion concentrations). From left are strongly acidic solutions (red,pH 1-3),then weaker acids (orange and yellow,pH 4-6),then weak alkalis (blue-green and blue,pH 8-10) and finally at far right strong alkalis (purple,pH 11-14). Neutral solutions (pH 7) show as green | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 4369 px × 4369 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |