ARDIANSYAH, Syahrul Ramadhan; SUJIWA, Akbar. ANALYSIS OF OXYGEN CONCENTRATION VALUES IN PORTABLE OXYGEN CONCENTRATOR DEVICES BY USING SILICA GEL AS FILTRATION MATERIAL. Best : Journal of Applied Electrical, Science and Technology, [S. l.], v. 5, n. 1, p. 11–14, 2023. DOI: 10.36456/best.vol5.no1.7891. Disponível em: https://jurnal.unipasby.ac.id/best/article/view/7891. Acesso em: 14 jun. 2026.