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EDTA (ethylenediaminetetraacetic acid) is a chelating agent that binds divalent metal ions such as calcium and magnesium. EDTA can be used to prevent degradation of DNA and RNA and to inactivate nucleases that require metal ions. EDTA can also be used to inactivate metal ion-requiring enzymes. This product is a powder for preparing EDTA solution; each powder-containing pouch yields 2.5 L of 0.5 M EDTA solution (pH 8.0).