Crosstex Gamma and E-Beam Chemical Process Indicators (CPIs) are manufactured to monitor whether Gamma and E-Beam exposure conditions were met at the point of application using pressure sensitive adhesive. CPI-R02 are designed for hand-held labeling systems and can accept any ink-based print by hand-held labeling systems. CPI-R02 are intended for use with individual units (e.g. packs, containers) to indicate that the unit has been directly exposed to a Gamma or E-Beam process and to distinguish between processed and unprocessed units.