DEVELOPMENT OF A FLOW-THROUGH CELL FOR ACCURATE MEASUREMENTS OF LOW ELECTROLYTIC CONDUCTIVITY
Chiara Boveri, Francesca Durbiano, Danilo Serazio
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 mS cm-1 and 50 mS 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 mS cm-1. The measurement system capabilities have been evaluated to be limited by contamination effects.
Keywords:
pure water, low conductivity measurement, flow-through cell
Download:
IMEKO-WC-2009-TC24-450.pdf
DOI:
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Event details
Event name:
XIX IMEKO World Congress
Title:

Fundamental and Applied Metrology

Place:
Lisbon, PORTUGAL
Time:
06 September 2009 - 11 September 2009
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