Thermo Fisher Scientific EcoScan CON 6 & TDS 6 - Manual (Page 47)

Instruction Manual CON 6/TDS 6
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Some users prefer the use of resistivity units to describe their water, particularly
where high purity water is involved. The unit most often used to describe
resistivity is megohm-cm, which are simply the reciprocal of conductivity
(µS/cm). The chart below shows the relationship between these units.
Conductivity, µS/cm Resistivity, megohm-cm
0.056 18
0.1 10
1.0 1.0
2.5 0.4
10.0 0.1