The Dependence of Boron Concentration in Diamond Electrode for Ciprofloxacin Electrochemical Sensor Application oleh Ilmi Nur Indriani Savitri, Prastika Krisma Jiwanti, Ilmanda Zalzabhila Danistya Putri, Irkham Irkham, Yasuaki Einaga, Ganden Supriyanto, Yew Hoong Wong, Sachin Kumar Srivastava, Che Azurahanim Che Abdullah