9 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 apparatus not for medical purposes, namely, scientific apparatuses and instruments, namely, gamma radiation emitting unit that contains a radioisotope; X-ray apparatus not for medical purposes, namely, x-ray emitter that contains a radioisotope in the nature of apparatus and installations for production of x-rays, not for medical purposes; gamma radiation apparatus not for medical purposes, namely, gamma radiation emitter that contains a radioisotope in the nature of apparatus and installations for production of gamma radiation, not for medical purposes; Ionizing radiation apparatus not for medical purposes, namely, ionizing radiation emitter that contains a radioisotope in the nature of an ionization apparatus for scientific or laboratory use