E-PERM

Radiation-measuring monitors, namely, electrets in the nature of electrostatically charged dielectric materials, reference electrets, electrets voltage meters, electrets holders and chambers, tamper resistant boxes and tamper indicating tape for holding, transporting and shipping the electrets in the protective holders and chambers, with the aforementioned being sold as a unit; Prerecorded DVD's and CD's with educational software, courseware, operators' manuals, and field analysis programs, featuring instructions for use of the above-identified radiation-measuring monitors and packaged with the monitors