Difference between revisions of "Water"

Latest revision as of 10:40, 18 February 2016

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Water

Description

Water, H₂O, is widely used in the laboratory, particularly as a solvent and cleaning agent. Chemically pure water is prepared in various grades of purification: double distilled water (ddH₂O) versus distilled water (dH₂O or aqua destillata, a.d.) and deionized or demineralized water (diH₂O) with various combination purification methods. When H₂O is mentioned without further specification in published protocols, it is frequently assumed that the standards of each laboratory are applied as to the quality of purified water. Purification is not only to be controlled with respect to salt content and corresponding electrical conductivity (ultra-pure water: 5.5 μS/m due to H⁺ and OH^- ions), but also in terms of microbial contamination.

Abbreviation: H₂O

MitoPedia topics: Media for respirometry, Substrate and metabolite

Examples

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 |abbr=H<sub>2</sub>O
 |description=[[File:H2O.jpg|left|60px|Water]]
-'''Water''', H<sub>2</sub>O, is widely used in the laboratory, particularly as a solvent and cleaning agent. Chemically pure water is used in various grades of purification: double distilled water (ddH<sub>2</sub>O) versus distilled water (AD or dH<sub>2</sub>O) and deionized or demineralized water (diH<sub>2</sub>O). Combination purification methods are frequently used. In published protocols, it is frequently assumed that the standards of each laboratory are applied as to the quality of purified water, when H<sub>2</sub>O is used without further specification. Purification is not only to be controlled with respect to salt content and corresponding electrical conductivity (ultra-pure water: 5.5 μS/m due to H<sup>+</sup> and OH<sup>-</sup> ions), but also in terms of microbial contamination.
+'''Water''', H<sub>2</sub>O, is widely used in the laboratory, particularly as a solvent and cleaning agent. Chemically pure water is prepared in various grades of purification: double distilled water (ddH<sub>2</sub>O) versus distilled water (dH<sub>2</sub>O or [[aqua destillata]], a.d.) and deionized or demineralized water (diH<sub>2</sub>O) with various combination purification methods. When H<sub>2</sub>O is mentioned without further specification in published protocols, it is frequently assumed that the standards of each laboratory are applied as to the quality of purified water. Purification is not only to be controlled with respect to salt content and corresponding electrical conductivity (ultra-pure water: 5.5 μS/m due to H<sup>+</sup> and OH<sup>-</sup> ions), but also in terms of microbial contamination.
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