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washing
(redirected from lavation)

   Also found in: Dictionary/thesaurus, Wikipedia 0.02 sec.
washing
1. something, such as gold dust or metal ore, that has been obtained by washing
2. a thin coat of something applied in liquid form

washing [′wäsh·iŋ]
(analytical chemistry)
In the purification of a laboratory sample, the cleaning of residual liquid impurities from precipitates by adding washing solution to the precipitates, mixing, then decanting, and repeating the operation as often as needed.
The removal of soluble components from a mixture of solids by using the effect of differential solubility.
(chemical engineering)
In a process operation, cleaning of a solids bed (settler) or cake (filter) with a liquid in which the solid is not soluble.


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