Gamma sterilisation indicator technology

Sherwood Technology has entered an exclusive worldwide licence agreement with Sessions of York. The collaboration enables Sessions to combine its labelling expertise with Sherwood's colour change and specialist manufacturing know-how in order to produce the Gamma Sterilisation Indicator labels over a ten year period. The labels provide an immediate visible record of all products and equipment that have undergone a volume sterilisation process. Sessions of York will continue to apply its registered brand name of 'Detex' to the Gamma Sterilisation Indicator labels.

Sherwood's self-adhesive indicator labels undergo a simple, chemical colour change when exposed to gamma radiation. The labels change from yellow to red when activated there is a bold and distinct colour-change from 5 up to 100 kGy. This provides a yes/no indicator of gamma exposure for a wide range of applications, including food irradiation and medical and surgical products sterilisation.