Aripta, T. P.; Suciyati, S. W.; Supriyanto, A.; Junaidi, J. Prototype Measuring Levels of Dissolved Ammonia Based on TSL2561 Sensor Calibrated Thermo Scientific Genesys 30 Visible Spectrophotometer. J. Energy Mater. Instrum. Technol. 2022, 3, 89-98.