품명 : ORP 복합전극모델 : PST-5721C(일반용)제조사 : TOA DKK원산지 : 일본대응기종 : HM-25G/30G/50G/60G, IM-55G, WM-50EG, HM-25R/30R, MM-60R, HM-7J/20J