News
January 7, 2017
Version 2017.1 was uploaded, containing a third type of titration.
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January 13, 2016
Version 2016.1 now allows you to add items to the database. Users can now manipulate the database to the full extent.
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January 23, 2015
A third version of the manual was uploaded. Contains new chapter about chemical background.
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January 1, 2015
After four beta-releases, the first full-grown version was released.
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What is CHEAQS?


CHEAQS Next is a computer program for calculating CHemical Equilibria in AQuatic Systems. You supply input data, the program calculates the chemical speciation for you. CHEAQS Next is free but it is not cheap.

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Database

periodic table

CHEAQS Next comes with a large database. Documentation is available for each equilibrium reaction in the database so you can always trace the source of an equilibrium reaction. In the periodic table on the right, you can see (in green) which elements are covered in CHEAQS Next' database. The database contains:


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