Abstract − The present paper focuses on the development of a flow-through cell and a closed circuit that permit to carry out measurements of low electrolytic conductivity of aqueous solutions under flowing condition. The traceability path has been set as follows: samples with conductivity between 200 μS cm-1 and 50 μS cm-1 have been employed for the calibration of the geometric constant of the new cell, by comparison with the primary cell of Istituto Nazionale di Ricerca Metrologica (I.N.Ri.M.). Then the flow-through cell has been used to measure values with decreasing conductivities down to 1 μS cm-1. The measurement system capabilities have been evaluated to be limited by contamination effects
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