Reagent compositions for measuring electrolyte

摘要

The present invention provides a combination of reagent compositions for measuring an electrolyte which are excellent in stability, precision and quantitativity and have high solution stability sufficient to withstand distribution. In the combination of the reagent compositions of the present invention, a chelating agent and an inactivated alpha-amylase capable of being reversibly activated by the electrolyte are formulated separately from each other.