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anion exchanger

noun

Definition of anion exchanger 

: an anion-exchange agent that can exchange its anion with the anion or anions of a solution passed through it or that can adsorb anions in the form of acids especially : an insoluble basic synthetic organic resin usually containing amine groups or quaternary ammonium groups

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First Known Use of anion exchanger

1941, in the meaning defined above

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The first known use of anion exchanger was in 1941

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