PAUZI, Iswari; WIADNYA, Ida Bagus Rai; JIWANTORO, Yudha Anggit; KHERY, Yusran. REKUPIS: Preliminary Spectral Characterization of a Banana Peel Extract-Based Reagent for Urea Colorimetry. Hydrogen: Jurnal Kependidikan Kimia, [S. l.], v. 14, n. 5, 2026. DOI: 10.33394/hjkk.v14i5.23254. Disponível em: https://e-journal.undikma.ac.id/index.php/hydrogen/article/view/23254. Acesso em: 14 nov. 2026.