NOR KHAIRINA BATRISYA ZUL KHAIRI; NUR AINI MOHD ARISH@ARSHAD. Development of pH Meter with Solar Panel as Battery Replacement of Lithium Button Cell. Progress in Engineering Application and Technology, [S. l.], v. 3, n. 1, p. 147–155, 2022. Disponível em: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/6434.. Acesso em: 18 jul. 2024.