Hermanto, D., Mudasir, Siswanta, D. , Kuswandi, B. and Ismillayli, N. 2021. Optical fiber mercury biosensor based on immobilized urease and bromothymol blue onto the alginate-chitosan membrane in the flow-system. Kuwait Journal of Science. 49, 1 (Dec. 2021). DOI:https://doi.org/10.48129/kjs.v49i1.9400.