Adsorption indicator | Article about adsorption indicator by The Free Dictionary
adsorption indicator[ad′sȯrp·shən ‚in·də‚kād·ər]
An indicator used in solutions to detect slight excess of a substance or ion; precipitate becomes colored when the indicator is adsorbed. An example is fluorescein.
References in periodicals archive
-- The liquid crystal indicator reacts to the adsorption of VOCs