The ability of a solution to conduct electricity is determined by the concentration and mobility of ions in the solution and by the charges carried by those ions. Conductivity is a measure of the number of mobile ions per unit volume in a solution. Aqueous solutions can have a wide range of conductivity, spanning a factor of more than ten million from ultra pure water to concentrated ionic solutions. Conductivity measurements can be used to investigate many systems including water quality, membrane diffusion, acid-base titrations, and material characterization. These numerous applications make conductivity experiments applicable to general, analytical physical as well as organic chemistry.
At first glance, one might consider this a simple measurement and with the advanced technology of modern cells and meters, it outwardly it appears to be. Once conductivity probes are calibrated, students simply stir their solution gently, immerse the probe and record the result on the PC. The MicroLab conductivity cell in conjunction with the MicroLab FS522 lab interface is no exception.