Since the early 1960's we have been manufacturing dosimeters at the Harwell site in Oxfordshire. We are proud to be a long serving and reliable supplier of dosimetry systems to the radiation processing industry.
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Welcome to Harwell Dosimeters
Harwell Dosimeters Limited manufacture dosimeters for the radiation processing industry.
Two types - Red 4034 and Amber 3042 - are made from radiation-sensitive poly-methylmethacrylate (pmma) in the form of optically transparent pieces individually sealed in laminate sachets.
They darken when irradiated, and the radiation-induced darkening, accurately measurable by means of a spectrophotometer, is a function of the radiation dose absorbed.
The third type - Harwell Radspin - are pellets made of the amino acid alanine in a wax matrix. They are available as plain pellets, or individually sealed in aluminium blisters.
On irradiation a stable radical is produced, which enables delivered radiation dose to be measured using a paramagnetic resonance spectrometer.
