Water: purification with a pinch of salt.
Schiermeier
Quirin
Q
D003247:Conservation of Natural Resources / Q000639:trends; D005618:Fresh Water; D038622:Internationality; D012623:Seawater / Q000737:chemistry*; D012965:Sodium Chloride / Q000302:isolation & purification*; D014739:Victoria; D018508:Water Purification / Q000191:economics / Q000379:methods*; D014881:Water Supply / Q000191:economics
D012965:Sodium Chloride