Patent ID: 8115182

Claim:
A radiation monitoring device comprising: a substrate; at least one imaging layer comprising a radiochromic material having capability of developing detectable color change at an exposure selected from ≦5, ≦10, ≦5, ≦100, ≦200, ≦500, ≦1,000 and ≦10,000 rads when exposed to ionizing radiation having energy higher than 5 eV; a binder; a UV absorbing layer less than 20 microns in thickness; at least one reference chart comprising at least one color corresponding to said detectable color change at a predetermined level of ionizing radiation; wherein said radiochromic material comprises a mixture of a pH sensitive dye and a halocompound, and wherein said device comprises dose to be monitored is printed on a side and printed required information describing, how to use, user's name, bar code, identification number, an effect of said dose and actions to be taken due to said dose.