Hariyanto, H., & Ramadhan , G. (2025). Comparative Analysis of Salinity Readings for Water Quality Monitoring between IoT-Based Sensor Systems and Refractometer . Jurnal Nasional Teknologi Dan Sistem Informasi, 11(3), 273–281. https://doi.org/10.25077/TEKNOSI.v11i3.2025.273-281