Ion Speciation research of Cr3+ dan Cr6+ has been conducted using potentiometric cell system potentiometric methods. The aim of this research is to determine the optimum conditions (pH and Temperature), validate the method (LoQ, LoD, accuracy, and precision), and determine ionic water content of Cr3+ dan Cr6+in the leachate. Potentiometric cell concentration methods, consist of metal chromium a…