Separating salt from rock salt. Rock salt being separated from its impurities. Crushed rock salt is added to warm water to dissolve the salt and filtered to remove any insoluble impurities. The solution is then heated gently to evaporate off the water. Here the pure salt is left behind after heating | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Trevor Clifford Photography |
Bildgröße: | 5119 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |