The Quantitative Analysis of Formaldehyde Content in Tuna Using Chromatropic Acid Reagent : Analisis Kandungan Formalin Pada Sampel Ikan Tongkol Di Pasar LKMK Siwalankerto Surabaya. Pharmasci 2023, 8 (2), 151-158. https://doi.org/10.53342/pharmasci.v8i2.370.