Statocalcein, a stable Calcein indicator for the EDTA titration of calcium.
A dipotassium pentacalcium dicalcein salt ("Statocalcein") is recommended for use in place of Calcein as an indicator for fluorimetric titration of calcium with EDTA. The new indicator remains stable in solution for long periods (at least 210 days).
Hoyle
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Dept of Chemistry Iowa State University Ames, Iowa 50010, U.S.A.
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