The desktop laboratory ultra pure water system adopts reverse osmosis technology and ion exchange technology combined with microcomputer single-board computer program control, water quality detection automatic display, so as to obtain high-quality produced water, its effluent resistivity can generally reach 18MΩ/cm.Two-stage pretreatment design, one-stage filtration is quartz sand to remove solid pollutants such as rust, sediment and suspended matter.Secondary filtration pp cotton removes residual chlorine, heterochromatic odor, organic matter and other pollutants in water.