This Journal has been previously named Ekuilibrium published since 2001 with ISSN: 1412-9124 (2007). In 2018, the name of EJChE with e-ISSN 2622-3430 (2018) was introduced as a continuation of Ekuilibrium without any policy changes. There is 2 (two) issues of publication each year. The official language of the Journal is English, but manuscripts in Bahasa Indonesia are also welcomed. Manuscript submission and reviewing process is fully conducted through online journal system (https://jurnal.uns.ac.id/equilibrium) using a double-blind review process.