What is the Shelf-Life of Harwell Perspex Dosimeters?
The shelf-life of Harwell Perspex® Red 4034, Amber 3042 and Gammachrome YR® dosimeters stored in appropriate conditions is at least 10 years. All three types of Harwell Perspex® (dyed polymethylmethacrylate) dosimeter, Red 4034, Amber 3042 and Gammachrome YR® may be satisfactorily calibrated after being stored in appropriate conditions for ten years. In a detailed assessment, the original calibration of all Red 4034 dosimeters studied was shown to be still valid after five years, and for two of the batches selected for study it remained valid after ten years.
