EVALUATION OF A MULTIPURPOSE DIALYZER IN A FLOW SYSTEM BY STUDYING THE INFLUENCE OF MEMBRANE PATH-LENGTH ON MASS-TRANSFER THROUGH A PASSIVEDIALYSIS MEMBRANE

A multipurpose dialyser unit was designed and evaluated by studying th e influence of membrane path length (membrane area) on mass transfer t hrough a passive dialysis membrane in a flow system. It was found that the multipurpose dialyser with passive semi-permeable membranes is a more flexible unit in flow systems. The dialyser should be a valuable unit for automated dilution or if multideterminations on a single samp le, containing a number of analytes with different concentrations has to be done. The type of sample, demand on sample throughput and concen tration of analyte to be dialysed could determine the draining point a nd the dialysis period to be employed for a specific analyser and the system can be designed around these parameters.