Universal indicator pH scale. The pH scale measures the strength of an acid or alkali. When universal indicator is added to a solution,it changes colour depending on the solution's pH. The tubes contain solutions of pH 0 to 14 from left to right. Acids increase in strength from pH 6 to pH 0,and alkalis increase in strength from pH 8 to pH 14. The green tube (centre) is neutral,pH 7. This image is a colour-enhanced version of the actual pH scale (see image A500/252) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Andrew Lambert Photography |
Bildgröße: | 4046 px × 3115 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |