RHG Products Tucker Water Fed Pole Purification System filters are manufactured and chosen specifically for their ability to produce ultra pure water. The reverse osmosis membranes are proprietary to Tucker and perform better than any other reverse osmosis membranes on the market. The Tucker carbon filters are made to not only remove chlorine, but also remove chloramines. Often chloramines are overlooked and this leads to expensive maintenance in the future. The Tucker DI resin is virgin resin rather than regenerated giving you the best resin you can buy today.