REFERENCE ELECTRODE FOR CELL CULTIVATION LIQUID, COMPOSITE ELECTRODE FOR CELL CULTIVATION LIQUID USING THE SAME, LIQUID ANALYZER FOR CELL CULTIVATION LIQUID, AND METHOD FOR ANALYZING CELL CULTIVATION LIQUID

摘要

To provide a reference electrode for a cell cultivation liquid, composite electrode for a cell cultivation liquid using the same, and liquid analyzer for a cell cultivation liquid capable of stably performing electrochemical measurement of pH or the like for a longer period.SOLUTION: A reference electrode for a cell cultivation liquid includes: an internal liquid 25; an internal pole 24 arranged to be immersed in the internal liquid 25; a storage body 21 that forms a sealed space 23 and stores the internal liquid 25, the internal pole 24, and a predetermined amount of gas 26 in the sealed space 23; and a liquid junction part 22 formed in the storage body 21. A salt concentration of the internal liquid 25 is equal to or more than 50 mM and equal to or less than 300 mM.SELECTED DRAWING: Figure 1