Technical support is available to registered users of MINEQL+ version 4.0 and greater. We no longer support version 3.x for DOS, although it will still be available through the download section.
To contact tech spport directly, see page 4 of the User's Manual or e-mail us.
Please include the following
information when corresponding with us:
Your name
Product serial number
A brief description of the problem
A copy of the problem's *.MIF file
Techical support is available Monday through Friday, 8:00 am to 5:00 pm
EST.
MINEQL+ FAQ list
I have a personal thermodynamic
database from version 3.0, can I use it in version 4.x?
Yes. Simply copy the file: PERSONAL.DAT from your
version 3.0 directory over to your version 4.x directory.
MINEQL+'s equilibrium constants don't
make any sense to me. They don't match anything I've seen in the
literature.
This can happen for many reasons. First, be sure that the constants you
have found in the literature are referring to the same chemical
reaction as the one in MINEQL+. Often the reactions are similar, but
use a different reference level (for instance, HCO3-
vs. CO32-). Another
reason is that MINEQL+ always writes its equations as formation
reactions. This means that solid phase reactions are always written in
the direction of forming precipitates rather than the dissolution of
the solid. This will make a difference in the sign of the equilibrium
constant. Finally, reasonable differences will always exist between
literature values, so it's not surprising that you will be able to find
values that differ slightly from those used in MINEQL+. See Chaper 15
of the User's Manual for more information about thermodynamic data.
When I run a single calculation I get
a different answer than when I run the same problem as a titration.
What's happening? When you use the MultiRun options,
MINEQL+ uses the single run settings as a template for all input
parameters except the parameter you specifed in the MultiRun Manager.
For instance, you may be performing a fixed pH titration in the range
of pH from 4.0 to 8.0. Everything in the problem is provided by the
single run template except pH which is supplied by the MultiRun
Manager. On the other hand, if you switch the calculation to a single
run, MINEQL+ will use the pH supplied by the template (by default the
pH is set to 7.0). Since the pH of the single run and that of the
MultiRun do not correspond, it is not surprising that that final
answers differ.
ERS
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