Profile: Numatik Engineers Pvt. Ltd. develops boiler water side chemicals, boiler fire side chemicals, cooling water treatment chemicals and others products. We also provide small boiler, big boiler and chilling plant. Ion exchange technology is used to remove salts (cations and anions) from the water Soluble chemical compounds, when dissolved in water, become ionized; that is their molecules dissociate into positively and negatively charged components called ions. Consider common table salt, sodium chloride. In its solid form, this compound consists of one sodium atom (Na) and one chlorine atom (Cl) tightly coupled together (NaCl). When dissolved in water, however, the compound splits into two ions, Na and Cl.