Hard water evaporation residue. A watch glass with evaporation residue left behind after hard water was evaporated. Hard water contains some dissolved and suspended mineral salts, most commonly carbonates and sulfates. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Turtle Rock Scientific |
Taille de l’image : | 5156 px × 3427 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |