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  2. Purified water - Wikipedia

    en.wikipedia.org/wiki/Purified_water

    The conductivity of water is measured in Siemens per meter (S/m). Sea-water is typically 5 S/m, [5] drinking water is typically in the range of 5-50 mS/m, while highly purified water can be as low as 5.5 μS/m (0.055 μS/cm), a ratio of about 1,000,000:1,000:1. Purified water is used in the pharmaceutical industry.

  3. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Sea water can have pH values that range from 7.5 to 8.4 (moderately alkaline). Fresh water can have widely ranging pH values depending on the geology of the drainage basin or aquifer and the influence of contaminant inputs . If the water is acidic (lower than 7), lime, soda ash, or sodium hydroxide can be added to raise the pH during water ...

  4. Ultrapure water - Wikipedia

    en.wikipedia.org/wiki/Ultrapure_water

    Ultrapure water (UPW), high-purity water or highly purified water (HPW) is water that has been purified to uncommonly stringent specifications. Ultrapure water is a term commonly used in manufacturing to emphasize the fact that the water is treated to the highest levels of purity for all contaminant types, including: organic and inorganic compounds; dissolved and particulate matter; volatile ...

  5. Are There Any Benefits to Drinking Alkaline Water? - AOL

    www.aol.com/lifestyle/benefits-drinking-alkaline...

    We dug into the science and chatted with an expert to find out the benefits of alkaline water. Here, the truth on whether the pH of your H2O can improve health.

  6. Reverse osmosis - Wikipedia

    en.wikipedia.org/wiki/Reverse_osmosis

    RO-purified rainwater collected from storm drains is used for landscape irrigation and industrial cooling in Los Angeles and other cities. In industry, RO removes minerals from boiler water at power plants. [18] The water is distilled multiple times to ensure that it does not leave deposits on the machinery or cause corrosion.

  7. Alkalinity - Wikipedia

    en.wikipedia.org/wiki/Alkalinity

    This is the case since the amount of acid in the rainwater is low. If this alkaline groundwater later comes into contact with the atmosphere, it can lose CO 2, precipitate carbonate, and thereby become less alkaline again. When carbonate minerals, water, and the atmosphere are all in equilibrium, the reversible reaction CaCO 3 + 2 H + ⇌ Ca 2 ...

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