PROBLEM TO BE SOLVED: To provide a dialyzer which allows a person who performs procedures to perform the necessary procedures for performing dialysis without omission as well as allows mistakes and omission in recording to be eliminated after performing the procedures.SOLUTION: In a dialyzer, the contents of the necessary procedure for performing dialysis are displayed, and when the name of a person who has performed the procedure and the timing at which the procedure has been performed are inputted, the name of the person and the timing are associated with each other and are stored.
