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  2. Distilled water - Wikipedia

    en.wikipedia.org/wiki/Distilled_water

    Distilled water. Distilled water is water that has been boiled into vapor and condensed back into liquid in a separate container. Impurities in the original water that do not boil below or near the boiling point of water remain in the original container. Thus, distilled water is a type of purified water .

  3. Water activity - Wikipedia

    en.wikipedia.org/wiki/Water_activity

    Water activity ( aw) is the partial vapor pressure of water in a solution divided by the standard state partial vapor pressure of water. In the field of food science, the standard state is most often defined as pure water at the same temperature. Using this particular definition, pure distilled water has a water activity of exactly one.

  4. Doubly labeled water - Wikipedia

    en.wikipedia.org/wiki/Doubly_labeled_water

    The mixed water sample then contains both types of heavy atoms, in a far higher degree than normal water, and is now "doubly labeled." The free interchange of hydrogens between water molecules (via normal ionization) in liquid water ensures that the pools of oxygen and hydrogen in any sample of water (including the body's pool of water) will be ...

  5. Distilled water 101: Is it safe to drink? Here's what this ...

    www.aol.com/news/distilled-water-safe-drink...

    Here's your guide to distilled water. You may think of water as a standard drink throughout your day, but there are actually many different types. Here's your guide to distilled water.

  6. Purified water - Wikipedia

    en.wikipedia.org/wiki/Purified_water

    Purified water is water that has been mechanically filtered or processed to remove impurities and make it suitable for use. Distilled water was, formerly, the most common form of purified water, but, in recent years, water is more frequently purified by other processes including capacitive deionization, reverse osmosis, carbon filtering ...

  7. Self-ionization of water - Wikipedia

    en.wikipedia.org/wiki/Self-ionization_of_water

    e. The self-ionization of water (also autoionization of water, autoprotolysis of water, autodissociation of water, or simply dissociation of water) is an ionization reaction in pure water or in an aqueous solution, in which a water molecule, H 2 O, deprotonates (loses the nucleus of one of its hydrogen atoms) to become a hydroxide ion, OH −.

  8. Aquaporin - Wikipedia

    en.wikipedia.org/wiki/Aquaporin

    Aquaporin. Aquaporins, also called water channels, are channel proteins from a larger family of major intrinsic proteins that form pores in the membrane of biological cells, mainly facilitating transport of water between cells. [ 1] The cell membranes of a variety of different bacteria, fungi, animal and plant cells contain aquaporins through ...

  9. Bacteriological water analysis - Wikipedia

    en.wikipedia.org/wiki/Bacteriological_water_analysis

    Bacteriological water analysis is a method of analysing water to estimate the numbers of bacteria present and, if needed, to find out what sort of bacteria they are. It represents one aspect of water quality. It is a microbiological analytical procedure which uses samples of water and from these samples determines the concentration of bacteria.

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