Water purification solutions - Prehrambeno-tehnološki fakultet Osijek
Water purification solutions - Prehrambeno-tehnološki fakultet Osijek
Water purification solutions - Prehrambeno-tehnološki fakultet Osijek
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Conductivity / resistivity measurement<br />
Conductivity and resistivity used to define the overall ionic purity/contamination<br />
Conductivity<br />
X = F∑c i z i µ i<br />
Conductivity<br />
(Siemens/cm)<br />
Faraday<br />
constant<br />
Concentration of each ionic<br />
species (eq/ml)<br />
Valence<br />
Mobility<br />
Ω -1 .cm -1 .s -1<br />
[H + ] = [OH - ] = 10 -7 M<br />
Minimum theoretical conductivity is<br />
0.055 µS.cm -1 at 25 °C<br />
Resistivity<br />
R<br />
=<br />
1<br />
X<br />
Maximum theoretical<br />
resistivity is 18.2 MΩ.cm at 25 °C<br />
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