The Geochemist's Workbench

The Geochemist's Workbench Software for the water planet...
www.GWB.com
..now free for everyone
community.GWB.com

The Geochemist's Workbench has from its introduction in 1991 set the standard in geochemical modeling. Many thousands of copies have been licensed and installed in more than 90 countries around the world. With its crisp user interface, fully integrated graphics, highly optimized algorithms, and advanced software architecture, the GWB makes quick work of geochemistry tasks small and large.

06/18/2026

Aqueous Solutions will be closed Friday, June 19th, for the Juneteenth holiday. We will reopen on Monday.

GWB 19.0.1 maintenance release features improved scrolling & trackpad performance, a fix to exporting thermo datasets in...
06/18/2026

GWB 19.0.1 maintenance release features improved scrolling & trackpad performance, a fix to exporting thermo datasets in Visual Minteq format, user experience improvements for GSS & the plotting apps, & resolutions to all known issues.

The Geochemist's Workbench is the standard for geochemical modeling in aqueous systems. Use the GWB to create Eh-pH diagrams, calculate speciation in solution, trace reaction paths, model reactive transport in flowing groundwater, and much more.

Aqueous Solutions will be closed on Monday, May 25 for Memorial Day. We will reopen on Tuesday.
05/21/2026

Aqueous Solutions will be closed on Monday, May 25 for Memorial Day. We will reopen on Tuesday.

Geothermometry, kinetics, & phase diagrams rounded out our Reaction Modeling Online Retreat. Join us next time! GWB.com/...
04/30/2026

Geothermometry, kinetics, & phase diagrams rounded out our Reaction Modeling Online Retreat. Join us next time! GWB.com/Workshops

3rd day of Geochemical Reaction Modeling retreat: mass transfer, buffers, & precipitation!
04/30/2026

3rd day of Geochemical Reaction Modeling retreat: mass transfer, buffers, & precipitation!

2nd day: spreadsheet for water data, activity diagrams, & surface complexation! GWB.com/Workshops
04/28/2026

2nd day: spreadsheet for water data, activity diagrams, & surface complexation! GWB.com/Workshops

1st day of the Geochemical Reaction Modeling retreat featured speciation, redox reactions, & activity coefficients!
04/27/2026

1st day of the Geochemical Reaction Modeling retreat featured speciation, redox reactions, & activity coefficients!

One week to go until online Geochemical Reaction Modeling workshop. Learn speciation, mass transfer, sorption, & more! G...
04/20/2026

One week to go until online Geochemical Reaction Modeling workshop. Learn speciation, mass transfer, sorption, & more! GWB.com/Workshops

There's still time to register for the April 27-30 Geochemical Reaction Modeling virtual retreat (half days). Learn buff...
04/13/2026

There's still time to register for the April 27-30 Geochemical Reaction Modeling virtual retreat (half days). Learn buffering, sorption, kinetics, & more! GWB.com/Workshops

Calibrate log Ks & aqueous activity coefficients for the effect of confining pressure, when using thermo databases with ...
04/02/2026

Calibrate log Ks & aqueous activity coefficients for the effect of confining pressure, when using thermo databases with the requisite data. GWB.com/gwb.php

Address

301 N Neil Street, Ste 400
Champaign, IL
61820

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

(217) 531-1206

Website

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