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[Macherey-Nagel, GmBH] A brand name for a colorimetric indicator paper used to detect copper. Cuprotesmo paper, when moistened with de-ionized water, will react with copper and copper containing compounds to form a pink-purple complex (Odegaard et al 2000).
Resources and Citations
- N.Odegaard, S.Carroll, W.Zimmt, Material Characterization Tests for Objects of Art and Archaeology, Archetype Publications, London, 2000