| HARWELL
Dosimeters are the dosimeter
specialists - and our experienced team
has produced this FAQ document to answer
all your queries regarding dosimeters
and dosimetry. If you have a question
you believe should be answered in the
FAQ, please submit it here
or complete our feedback
form.
What
is a Dosimeter?
Dosimeters are devices which register doses of radiation.
Dosimeters are typically made of small pieces of radiation-sensitive material which change
colour when irradiated. By measuring the amount of colour-change by means of a
spectrophotometer, the total dosage can be calculated.
What are Dosimeters used for?
Dosimeters mainly used to measure safe levels of radiation
exposure in areas such as the nuclear industry, medicine and the sterilisation of medical
equipment.
Who are Harwell Dosimeters?
HARWELL
Dosimeters is one of
a number of companies which evolved
from UKAEA, including AEA Technology
plc, Harwell Instruments
and Johnson Controls Ltd. Our
ex-colleagues in these companies provide
some related products and services with
which ours are sometimes confused. We
maintain a list of external
links to these are other companies
in related fields
What Products and Services do Harwell Dosimeters
make?
HARWELL
Dosimeters produces
high-quality dosimeters mainly for use
in the sterilisation of medical equipment.
Three types, Red 4034, Amber 3042, and
Gammachrome YR are made from radiation-sensitive
poly-methylmethacrylate (pmma) in the
form of optically transparent pieces
individually hermetically 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. We maintain
a page providing technical
specifications for each product.
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