In this work operational parameters on selective dissolution of bulk PA 6 using CEW are investigated experimentally in order to provide a scale up conception for industrial application. These parameters include: energy supply mode (section 3.2), dissolution time (section 3.3), CEW composition (section 3.6) and CEW:PA ratio (section 3.7). To ensure the quality of the results, mass balances, conversions and recoveries of the dissolution experiments are reported. Additionally, the recovered PA 6 is analyzed with regard to its Ca 2+ content and molecular weight distribution (section 3.1). First mechanistic investigations are conducted in section 3.4.