Self-adhesive, non-toxic, chemical process indicators that change from yellow to red upon exposure to gamma or electron beam radiation. Labels are coated with a UV blocking agent for protection from exposure to UV light. A minimum of 15 kGy irradiation is recommended for sufficient end-point colour development. At greater dosage levels, the radiation indicators exhibit a darker shade of red.

• When exposed, imprinted indicators (Cat. No. 489-0093) read 'RED IS γ-EXPOSED'
• Stable for at least 24 months from date of manufacture when stored at room temperature