Ultra-pure water means water with a resistivity of up to 18 MΩ*cm (25°C).

Ultra-pure water refers to water of extremely high purity. This is a type of industrial water used in the integrated circuit industry for semiconductor raw materials and used in the cleaning of utensils, lithography mask plate preparation and silicon wafer oxidation with the source of water vapor, etc.. In addition, the production of other solid-state electronic devices, thick and thin-film circuits, printed circuits, vacuum tubes, etc. also use ultrapure water.

Uses

Extremely pure water. It is used in the integrated circuit industry for the cleaning of semiconductor raw materials and utensils used, the preparation of photolithographic mask plates, and the water vapor source used for the oxidation of silicon wafers. In addition, other solid-state electronic devices, thick and thin-film circuits, printed circuits, vacuum tubes and other production also use ultrapure water.

Ultra-pure water, the general process is difficult to achieve the degree of pre-treatment, reverse osmosis technology, ultra-purification treatment and post-treatment of the four major steps, multi-stage filtration, high-performance ion exchange units, ultra-filtration filters, ultraviolet lamps, in addition to the TOC device and other treatment methods, resistivity party can reach 18.