A new flow conductivity cell has been constructed to accurately measure concentrated aqueous solutions at elevated pressures. It was constructed from quartz tubing (4 cm long with 0.4 mm inside diameter), two platinum electrodes connected to two short platinum tubes, and several O-rings held together with HPLC fittings that form the seals. The cell constant was found with potassium chloride solutions between 0.01 and 0.7 M to be 35.61 ± 0.11 cm<sup>–1</sup> (standard deviation). It has been used at 298 K and 0.6 MPa to measure sodium chloride solutions between 0.01 and 1.0 M. Agreement with the literature for these solutions was equal or better than ± 0.52%.

New flow conductivity cell for high concentration aqueous solutions and elevated pressures

251st National Meeting (2016)

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