English to Russian Science Physics измерение эл. проводимости воды

Conductivity. Determine the conductivity off-line or in-line under the following conditions.
Conductometer calibration: by means of precision resistors or equivalent devices, after disconnecting the conductivity cell, for all ranges used for conductivity measurement and cell calibration (with an accuracy within 0.1 per cent of the stated value, traceable to the official standard).
If in-line conductivity cells cannot be dismantled, system calibration may be performed against a calibrated conductivity cell placed close to the cell to be calibrated in the water flow.

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