Geochemist Workbench 18.0

GWB 18: Professional Geochemical Modeling Software

GWB 18 (Release 18) is a major version of The Geochemist's Workbench®, the industry-standard software for geochemical modeling, aqueous chemistry, and reactive transport simulation. The current release as of July 2025 is 18.0.2, which represents the latest maintenance update to the GWB 18 series . This version introduces significant capabilities including gas phase evolution tracking, Pitzer database support, CD-MUSIC surface complexation models, and a next-generation spreadsheet interface (GSS) .

Key New Features in GWB 18

Advanced Phase & Transport Modeling