... can get high quality pure water. Lon-exchange is a method to wipe off the ... filling kation and anion resin in exchanging pole, using ion-exchange resin to exchange with calcium, magnesium and ... natrium ions to get high pure water. Lon-exchange resin is macromolecule compound, it is stable in water ... acid, alkali and salt, does not melt. Resin is of large quantity exchanging, long wearable, good ...