The cleaning property of ion exchange resins is one of the most significant indexes to evaluate the resin quality. The test and evaluation method for the resin cleaning property was proposed. In this method

a total volume of five-bed volumes(5 BV) demineralized water was applied to leach 200 mL resin samples at the leaching strength of(1.5±0.1) m L/(cm~2·min). The conductivity of the leaching effluent was on-line monitored. All the leaching effluent was collected. The leaching kinetic constant and the conductivity at 5 BV were used to characterize the difficulty of resin cleaning. The conductivity and total organic carbon(TOC) content or ultraviolet absorption value(UV254) of the total leaching effluent were used to characterize the amount of resin leachables. The correlation analysis between UV-Vis spectra and TOC of the total leaching effluent can reflect the species difference of the resin leachables. This method can provide references for selection and acceptance of new resins.