ASRIYANI, N.; RAHMAWATI, H. . Identification of Functional Groups of Rapitest Luster Leaf Products for Soil Phosphorus Testing Based on Color Changes using Fourier Transform Infrared Spectroscopy (FTIR). Journal of Energy, Material, and Instrumentation Technology, [S. l.], v. 5, n. 3, p. 117–123, 2024. DOI: 10.23960/jemit.v5i3.277. Disponível em: https://jemit.fmipa.unila.ac.id/index.php/jurnal/article/view/277. Acesso em: 1 oct. 2025.