2023. PRODUCTION OF BIODIESEL WITH VARIOUS RAW MATERIALS AND DIFFERENTIATION OF THE BIODIESEL-GLYCERIN PHASES AND WASHING WATER WITH VOLTAGE DIVIDER CIRCUIT AND ARDUINO. RECIMA21 - Revista Científica Multidisciplinar - ISSN 2675-6218. 4, 5 (May 2023), e453124. DOI:https://doi.org/10.47820/recima21.v4i5.3124.