X-ray apparatus not for medical purposes, namely, x-ray unit that contains a radioisotope for scientific instrumentation, laboratories, and research; gamma radiation apparatus not for medical purposes, namely, gamma radiation emitting unit that contains a radioisotope for scientific instrumentation, laboratories, and research; X-ray apparatus not for medical purposes, namely, scientific apparatuses and instruments, namely, x-ray emitting unit that contains a radioisotope; gamma radiation appa...