Sequestrant
BG 29/2021 Pre-Commission Cleaning of Pipework Systems, Amended 6th edition, written by Chris Parsloe and Martin Ronceray, published by BSRIA in partnership with the Closed Systems Control Association (CSCA) in March 2021, defines a sequestrant or sequestering agent as: ‘A substance that removes a metal ion from a solution by forming a complex ion that does not have the chemical reactions of the ion that is removed. A sequestrant may be a chelating or complexing agent.’
--BSRIA
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