Harwell Dosimeters Ltd
540 Becquerel Avenue
Harwell Science and Innovation Campus
DIDCOT, Oxfordshire
OX11 0TA
United Kingdom
Tel: +44 (0)1235 435704
Fax:+44 (0)1235 436313
E-mail: Harwell Dosimeters

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Specifications

Dosimeters: for the measurement of radiation dose in industrial irradiation plants

Type

Material a single batch of "Perspex" cast polymethylmethacrylate sheets	.	.	.

Dimensions length 30 mm; width 11 mm	3 +/- 0.55mm	3 +/- 0.55mm	1.7mm nominal

Measurement reproducibility Coefficient of variation of specific absorbance measurements on sets of dosimeters from the batch, simultaneously irradiated together, in a radiation field uniform within +/- 1%, is, over the entire calibrated range:	not more than 2% 5 to 50 kGy	not more than 2.5% 1 to 10 kGy at 603nm wavelength 10 to 30kGy at 651nm wavelength	not more than 3% 100 to 3000Gy

Calibration quality Over the calibrated range, all mean specific absorbance data points are within 3% of a fourth order polynomial least squares fit to the data.	.	.	.

Traceability HARWELL calibration is traceable to the UK standard of absorbed dose at the National Physical Laboratory	.	.	.

Shelf life Shelf life demonstrated to be at least	ten years	five years	.

Packaging Sealed in labelled sachets made of polyester / aluminium foil / polyester / polyethylene laminate packed 1000 per carton Packing is to defined AQLs, checked to ISO 2859-1, single normal inspection, level II.	.	.	.

Typical response curves(click to view)