<s>
Aqion	B-Application
is	O
a	O
hydrochemistry	O
software	O
tool	O
.	O
</s>
<s>
The	O
software	O
aqion	B-Application
is	O
free	O
for	O
private	O
users	O
,	O
education	O
and	O
companies	O
.	O
</s>
<s>
In	O
order	O
to	O
flatten	O
the	O
steep	O
learning	O
curve	O
aqion	B-Application
provides	O
an	O
introduction	O
to	O
fundamental	O
water-related	O
topics	O
in	O
form	O
of	O
a	O
"	O
chemical	O
pocket	O
calculator	O
"	O
.	O
</s>
<s>
The	O
program	O
aqion	B-Application
belongs	O
to	O
the	O
category	O
LMA	O
approach	O
.	O
</s>
<s>
(	O
4	O
)	O
aqion	B-Application
adopts	O
the	O
numerical	O
solver	O
from	O
the	O
open-source	O
software	O
PhreeqC	O
.	O
</s>
<s>
The	O
software	O
aqion	B-Application
is	O
shipped	O
with	O
a	O
set	O
of	O
example	O
solutions	O
(	O
input	O
waters	O
)	O
and	O
a	O
tutorial	O
how	O
to	O
attack	O
typical	O
water-related	O
problems	O
(	O
online-manual	O
with	O
about	O
40	O
examples	O
)	O
.	O
</s>
