Tan JJ, Hashim NHBH. The Effect of pH towards Copper (II) Bromide Reaction in Surfactant Determination. peat [Internet]. 2025 Apr. 29 [cited 2026 Apr. 7];6(1):74-80. Available from: https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/19305