Dosimetry


Highlights of Dosimetry

Measurement of Absorbed Dose
Procured From BRIT
Ceric-Cerous Dosimeters Used
Method of Evaluation-Potentiometric

Dosimetry is evaluation of the absorbed dose after the product is exposed to Gamma Radiation, The Unit of absorbed dose is kGy/(kilo Gray).

The dosimetry readout system consist of a Glass Electrochemical Cell (ECC) connected to a milli-volt meter(mV).

Ceric Cerous Sulphate dosimeters are used for routine process control. These are of 2 types. 15 mM and 5 mM. 15 mM is used for dose range of 8-45 kGy and 5 mM is used for dose range of 5-15 kGy. They are procured from The Radiation Processing Plant of BRIT, Vashi where it is manufactured. Irradiated dosimeters are evaluated potentiometrically using a Glass Electrochemical Cell (ECC) connected to a mili-voltmeter (mV meter) in the inhouse laboratory. The mV reading is converted to the Kilogray(kGy) reading using computer software. Each batch of dosimeter is received alongwith a Dose Calibration Certificate and mV vs. kGy chart.


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