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Dear Dr.David Parkhurst:

How are you. After finishing my study in Oslo, I moved to the States
last month as a post-doctor currently at Lawrence Berkeley National Lab.

When I use PHREEQC to solve some problems, I got some trouble in
explaining the results, for example, activity higher molality for the
same species. The reason for this is due to the limitation of PHREEQC in

handling high ion-strength solution. Do we have some way to solve this
problem? or if you have other programs which can be used to solve this
problem. Please let me know. Thanks.

Best Regards,

Zuoping Zheng

Tel: 510-486-6472

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