ISO/ASTM 51401:2003 covers the preparation, testing, and procedure for using the acidic aqueous silver dichromate dosimetry system to measure absorbed dose in water when exposed to ionizing radiation. The system consists of a dosimeter and appropriate analytical instrumentation. For simplicity, the system will be referred to as the dichromate system. It is classified as a reference standard dosimetry system.
ISO/ASTM 51401:2003 describes the spectrophotometric analysis procedures for the dichromate system.