H2OMSPL Nano Filtration System is applied to remove multivalent ions (like heavy metals) and is often used for decolorization, desalting, reducing the amount of organic matter. As a filtering technique Nano filtration is situated in between ultrafiltration and reverse osmosis. Ultrafiltration will not separate ions, whereas a NF will remove the larger ions. An RO, on the other hand, will remove nearly all the ions. NF has the same setup as an RO: a large stream flowing by the membrane while only the filtrate stream goes through the membrane. Nano filtration also works according to this cross flow principle.