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Ionic strength out of range

Tom Meuzelaar

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[admin notice: the below is from the former GWB users group email distribution list. This message was originally posted 6/13/2006]


Posted by: Grant Douglas


Dear All,


I have attached the simplest of react files here I just want to have a

look at some saturation indices at very high ionic strength. I am using

the HMW database, but what I get as an answer is "ionic strength out of



Any assistance appreciated.




Posted by: Craig Bethke


Hi Grant,


Thermodynamics is not fond of zero species concentrations. If you set the HCO3- concentration to a small value, or remove it from the simulation altogether, I think you'll be back in business.


Hope this helps,


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