I use ready to use commercially available ELISA kit employing TMB/HRP method for detection of antigen. in TMB redox event what is supporting electrolyte?
Sir,Strong acid which is added in the end to stop the redox reaction act as a supporting electrolyte.This supporting electrolyte lowers the resistance and the potential gradient.It also eliminate the effect of electrical migration and it is generally used in the concentration at least 100 fold greater than the analyte. This helps in the accurate measurement of the current flowing as a result of redox process at the electrode surface.