Filtering impurities from rock salt. The natural rock salt has been ground and dissolved in warm water. All of the salt,sodium chloride,dissolves,leaving a suspension of mineral and organic impurities. These are filtered out in the filter funnel. The liquor that is collected is then evaporated leaving only the pure crystalline salt behind | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 4500 px × 4500 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |