Temperature and conductivity
Electrical conductivity generally rises as temperature increases because ionic mobility changes. A conductivity value should therefore be interpreted with its measurement temperature and, where appropriate, a temperature-compensated value.
For RO, DM and boiler applications, trends are more useful when measurements are taken consistently. A sudden conductivity change at a stable temperature can indicate leakage, exhaustion, contamination or instrumentation problems.
Use the instrument's stated compensation method and calibration procedure; do not compare readings from different instruments without checking temperature and cell configuration.