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19 nov 1903 anni - Water Softening
Descrizione:
This was the process to remove cations from the water by exchanging them with sodium in ion exchangers.
Aggiunto al nastro di tempo:
Important Water Dates in History
By
Nick Davis
28 gen 2018
0
0
267
Data:
19 nov 1903 anni
Adesso
~ 120 years ago
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