Other ionizers that are not as efficient as Olansi Air Purifier Air purifiers could be classified as the ionizer water maker and the reverse reverse ionizer. Osmosis device. The ionizer water maker can only purify the water that it is drinking Water, however the reverse osmosis process will not make the water purer. shower, however, it will make sure that the water is clean before it goes into your shower. These systems must be used to purify the water. While it may appear to be an ideal concept, it's going to be an extremely long the time to see what results take place, and they tend to be quite expensive.