Zainal A, Abdul Wahab N, Yusof MI. PLC-based PID controller for real-time pH neutralization process using Palm Oil Mill Effluent. IIUMEJ [Internet]. 2023 Jan. 4 [cited 2024 May 7];24(1):244-55. Available from: https://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/2366