Introduction: Deionized Water System for Hospital Test is usually used for rountine chemical laboratory analysis instruments especially biochemical analyzer. The equipement with simple and generous appearance can easily produce water grade II (0.1-1 us/cm ultra-pure water) and water grade III (2-10 us/cm pure water for glass ware washing) which meets standard ASTM, CAP, NCCLS, GB and T6682-2008. Parameter: 1. Source water pretreatment system: PP fiber filter + AC filter + PP filter (1) PP: efficiently filtrate silt, rust, algo, colliod, suspended matter and other inpurities whose diameter is over than 5 um in the water. (2)AC: adsorb residual chlorine, pigment, off-flavor and parts of organic matters. 2. Reverse osmosis system: It has high removal rate more than 99% for high valent ions, colloids, bacteria, organic matter, endotoxin, etc. 3. Ultra pure system: Ion exchange resin using H + exchange cation out the water in the filter ,using OH- exchange anions out the water , the replaced H + and OH- combined to produce H2O, ultra-purified column filling the United States Dow UPW-450 Ultra-pure water for nuclear grade resin, the water resistance of up to 10 MΩ.cm. Features: 1.Water Quality on-line monitoring; accurate and intuitive LCD panel digital display; 2.Polyethylene (PE) and polyacetal (POM) made pressure tank avoids secondary pollution; 3.Automatic water production and storage; 4.Produce RO pure water and UP ultra-pure water. 5.System flushing extends life span of reverse osmosis membrane 6.Pressure alarm display. 7.Automatic water quality alarm. Application: * Biochemical analyzer: Hitachi, Olympus, Beckman, Toshiba, Mindray, etc. * Routine physical and chemical testing; * Analysis experiments. * AA (Atomic Absorption); * AES (Atomic Emission); * HPLC;