This in-line cleaner uses the latest technology to remove rosin fluxes and pastes from electronic assemblies. Unlike other inline cleaners, the Aeterna Solvent Inline Defluxer provides a very high throughput, high precision defluxing process while requiring minimal floor space. This system allows for processing of a high volume of printed circuit boards and electronic assemblies, and it can be used with a variety of halogenated hydrocarbon defluxing solvents, including nPB and HFC/HFE fluorinated chemistries. The halogenated hydrocarbon solvents used in the Aeterna provide superior conventional inline defluxing systems. The Aeterna series inline cleaning system can easily be assimilated in between upstream and downstream operations on an electronic manufacturing line.