Dosimetry characterization of tetrazolium violet-polyvinylalcohol films

The dosimetry characteristics of the polyvinylalcohol-based tetrazolium violet film has been studied in order to check its suitability for routine dosimetry in radiation processing. Our investigations reveal that this dosimeter film can be used for process control in radiation sterilization, but its application range depends on the concentration of the dye and the solvents used. The effects of irradiation temperature and humidity, dye concentration, pH of the solvent as well as the stability of the response of the films before and after irradiation were investigated and determined.