GWB Time-shifted Workshop
“GWB Community Edition”
Presented online • 22–24 August 2023

This workshop is presented in a time-shifted format for the convenience of participants in East Asia, Australasia, and the western Americas.

Register Now

Please join us from the comfort of your home or office for instructor-led, hands-on training on using the free Community Edition of The Geochemist's Workbench®. This powerful, immensely popular software package is available to the geochemistry community worldwide at no cost.

The workshop will be presented as a fully interactive, instructor led online meeting for three consecutive half-days, from 16:00 to 20:00 CDT (21:00 to 01:00 UTC).

This workshop will be of interest to users of all versions of the GWB 2023 software, including the GWB Community Edition.

What you will learn. Following a fully hands-on format, you will learn all the ins and outs of this advanced toolset. Specific topics covered include:

  • Species distribution in solution
  • Saturation and partial pressure
  • Redox disequilibrium
  • The geochemist's spreadsheet GSS
  • Modeling inside GSS datasheets
  • Brines and the “Pitzer equations”
  • Automatic reaction balancing
  • Equilibrium lines and equations
  • Pourbaix, activity, solubility diagrams
  • Surface complexation modeling
  • Triple-layer and CD-MUSIC models
  • The TEdit thermo data editor

Prerequisites: There are no advance requirements for this course beyond an interest in geochemistry and a willingness to learn.

More information? Contact workshop support. Can't come? Consider an alternative from our 2023 workshop lineup.

The short presentations and example exercises really showcased what the software can do and provided us with an opportunity to test drive the software.

– George A., Environmental Engineer, USA

The Reactive Transport Workshop was absolutely fantastic! Five stars, would recommend to a friend!

– Kristina G., Syracuse University

I loved the workshop! It was just the right combination of instruction plus hands‑on.

– Karen Kinsella, GZA GeoEnvironmental


The workshop will be presented by Brian Farrell and Jia Wang. Brian and Jia are Geochemists at Aqueous Solutions LLC, makers of The Geochemist's Workbench®.

Brian Farrell
Brian Farrell

Brian Farrell has many years of experience in developing and applying geochemical and reactive transport models. He is expert in aquifer microbiology, geochemical modeling, and reactive transport in geochemical systems. Brian has taught short courses in North and South America, Europe, Africa, Asia, and Australasia.

Jia Wang is an aqueous and isotope geochemist and a reactive transport modeler with special expertise in weathering and the critical zone. She has many years of experience as an instructor at the undergraduate and graduate levels, and as a noted mentor to less experienced students at the secondary through graduate levels.

Jia Wang
Jia Wang
Matthew Kirk Matthew Kirk
Matthew Kirk is a professor in the Department of Geology at Kansas State University. His research integrates concepts from geochemistry, microbiology, and hydrogeology to answer questions related to water, energy, and the environment. An experienced geochemical modeler, Matt has long structured his classroom teaching around the GWB.


Register Now

Space is limited, so sign up early. The workshop fee is US$299 until July 28, or $349 after that date.

A registration may be transfered to another participant at no charge, and is fully refundable until 30 days before the workshop. Liability in the event of workshop cancellation or other eventuality is limited to refund of the registration fee.

How to participate

Plan to enjoy this online workshop from the comfort of your own home or office! We will use a secure video conferencing platform that allows participants to ask questions, share their screens, and generally interact with the instructors and other participants.

Please plan to join the online meeting room from 21:00 to 01:00 UTC, or:

Beijing 05:00–09:00
Tokyo 06:00–10:00
Sydney 07:00–11:00
Honolulu 11:00–15:00
San Francisco 14:00–18:00
Chicago 16:00–20:00
New York 17:00–21:00
London 22:00–02:00

We will take periodic breaks between instructional units over the course of each meeting.

Please expect an email containing a meeting ID and password in the days leading up to the workshop.

Before the workshop

As the workshop date approaches, please take note of the following:

  • If you do not have access to the GWB 2023 software, begin by downloading the free GWB Community Edition.
  • Please make sure a version of GWB 2023 is installed and activated on a computer running MS Windows before joining the workshop.
  • About a week ahead of the workshop, we will send you the workshop schedule along with two pdf files.
  • The first pdf file holds the complete set of PowerPoint slides to be shown by workshop instructors, in chronologic order, for your reference during and after the workshop.
  • We recommend you print and spiral bind the second pdf file, containing the workbook you will use to complete hands-on exercises.
  • We think you will be happiest if you have two computer screens available. That way, you will be able to take part in the workshop on one screen, while you use the other to run the software.


The workshop is presented courtesy of Aqueous Solutions LLC, makers of The Geochemist's Workbench® software package.

Aqueous Solutions The Geochemist's Workbench