Socialization of Rhodamine B Dye Content in Liptint Sold in Lubuk Pakam Which is Analyzed Using UV-Vis Spectrophotometry. JPK [Internet]. 2023 Dec. 31 [cited 2025 Dec. 17];3(2):229-33. Available from: https://ejournal.medistra.ac.id/index.php/JPK/article/view/1455