Difference between revisions of "Deionized water"
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== Description == | == Description == | ||
| − | Water which has had all charged particles removed. Deionized water (DI water) is produced using an ion exchange | + | Water which has had all charged particles removed. Deionized water (DI water) is produced using a two-stage process that first passes water through an ion exchange resin to replace any dissolved cations with hydrogen; the resultant acids are then adsorbed in a second column that contains an acid scavenger. Another type of filtration, called reverse osmosis, uses pressure to force the small water molecules through a membrane while trapping larger minerals and contaminants. |
| − | + | Soaking any material in DI water will readily dissolve or leach any salts or ions. | |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Revision as of 06:50, 24 April 2020
Description
Water which has had all charged particles removed. Deionized water (DI water) is produced using a two-stage process that first passes water through an ion exchange resin to replace any dissolved cations with hydrogen; the resultant acids are then adsorbed in a second column that contains an acid scavenger. Another type of filtration, called reverse osmosis, uses pressure to force the small water molecules through a membrane while trapping larger minerals and contaminants.
Soaking any material in DI water will readily dissolve or leach any salts or ions.
Synonyms and Related Terms
DI water; de-ionized water; demineralized water; deionised water (Br.); agua desionizada (Esp.)
Other Properties
Normal deionized water: resistance=1 mega-ohm/cm Ultra-pure deionized water: resistance=18 mega-ohm/cm
Sources Checked for Data in Record
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- A Glossary of Paper Conservation Terms, Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998
- Website address 1 Comment: www.hants.org.uk/museums - conservation termlist
- Website address 2 Comment: AMOL reCollections Glossary - http://amol.org.au/recollections/7/c/htm
- Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Deionized_water (Accessed Mar. 1, 2006)