Pertiwi, S. (2021). DESIGN AND MAKING FORMALIN LEVEL DETECTION TOOLS IN FOOD USING ARCHUINO UNO-BASED HCHO SENSORS WITH NOTIFICATION THROUGH SMS. Kumpulan Karya Ilmiah Mahasiswa Fakultas Sains Dan Tekhnologi, 1(1), 310. Retrieved from https://jurnal.pancabudi.ac.id/index.php/fastek/article/view/1892