hikmah, nurhikmah et al. 2026. Optimization of Gracilaria sp. Seaweed Salt Purification Analysis through the Integration of Hydroextraction and Recrystallization Methods to Meet the Indonesian National Standard (SNI) for Edible Salt. EduMatSains : Jurnal Pendidikan, Matematika dan Sains. 11, 1 (Jul. 2026), 388–402. DOI:https://doi.org/10.33541/edumatsains.v11i1.8454.