Al-Sabbagh, B. and Abdulrazzaq, N.N. 2022. Measuring Dyes Concentration Using a Low-Cost Visible-Light Spectrophotometer. Iraqi Journal of Chemical and Petroleum Engineering. 23, 2 (Jun. 2022), 27–33. DOI:https://doi.org/10.31699/IJCPE.2022.2.4.