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Ultrapure water machines generally use advanced reverse osmosis technology to produce pure water. The working principle of the water purifier is to apply a certain pressure to the water, so that the water molecules and ionic mineral elements pass through the reverse osmosis membrane, and most of the inorganic salts (including heavy metals), organic substances, bacteria, viruses, etc. dissolved in the water are dissolved. Impermeable reverse osmosis membrane, so that the permeated pure water and the impermeable concentrated water are strictly separated.
Laboratory pure water systems usually require the concentration of impurity elements and compounds in pure water to be at the ppb level or even lower. High performance liquid chromatography (HPLC) for trace analysis requires ultrapure water with low levels of organic contaminants as a mobile phase component. Typically, trace analysis requires that pure water be free of detectable substances and that any potential interfering substances must be separated from the water.
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