A method of chemical analysis that measures the amount of a substance by forming a complex with a reagent and measuring the complex formation.
From 'complex' plus Greek 'metron' (measure). Developed in the mid-20th century as an analytical chemistry technique.
Complexometry revolutionized water testing and medical lab work in the 1950s—now it's so common that water companies use it constantly to check if your tap water is safe!
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