Evaporation residues from distilled water (left) and hard water (right). Distilled water has had all its ions removed. Hard water contains dissolved mineral salts,usually magnesium and calcium carbonates and sulphates. These are left behind as white crystals when the water evaporates | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Andrew Lambert Photography |
Bildgröße: | 4912 px × 3659 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |