Universal indicator paper packaging showing colour chart. Universal indicator paper changes its colour depending on the pH of the solution tested. It is used to measure the strength of an acid or an alkali. pH is a logarithmic measure of hydrogen ion concentration. Acid solutions have a high concentration of hydrogen ions,while alkali solutions have a low concentration of hydrogen ions | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Science Source |
Taille de l’image : | 3361 px × 4433 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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