Sirun, Syafril Syafar, Lukman Hakim Nasution, Jeni Lukita Juana Prawita, Galen Aquitha Surya de Gathy. THE PERFORMANCE OF GREEN MATERIAL IN WATER FILTRATION TOWARD THE POWER OF HYDROGEN (PH) AND TOTAL DISSOLVED SOLIDS (TDS). Int. j. innov. eng. res. technol. 2021;8(06):145-150. doi:10.17605/OSF.IO/Y2JM5 Category: Project