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Ulhaq, N., Salamah, I. and Suroso, S. 2025. IoT-Based Cooking Oil Quality Monitoring System Using Thresholding Method on Android Application. ITEJ (Information Technology Engineering Journals). 10, 1 (Jun. 2025), 109 - 118. DOI:https://doi.org/10.24235/itej.v10i1.233.