Warning: file_get_contents(https://ojs.journalbusiness.my/ojs.php): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in /var/www/ojs.unud.ac.id_backup/lib/pkp/includes/functions.inc.php on line 4 Trisnawati, N., Krismayanti, N., & Vikana Suari, P. (2024). VALIDASI METODE UJI AMONIA (NH3) MENGGUNAKAN SPEKTROFOTOMETER UV-VIS 2600. CAKRA KIMIA (Indonesian E-Journal Of Applied Chemistry), 12(2), 94 - 99. Retrieved from https://ojs.unud.ac.id/index.php/cakra/article/view/124190