Aisha Mohammed Hamza and Dr. Dheaa Shamikh Zageer (2026) “Natural Dyes as pH indicator: a review”, AL-Yarmouk Journal, 21(2), pp. 22–29. Available at: https://journal.al-yarmok.edu.iq/index.php/alyj/article/view/1348 (Accessed: 29 July 2026).