Looks great and I see it has a lot of positive reviews. Out of curiosity, since this is a a high-stakes equipment since it's used for safety, did you have to ge

Looks great and I see it has a lot of positive reviews. Out of curiosity, since this is a a high-stakes equipment since it's used for safety, did you have to get a certification of any kind to sell it commercially? I also see you ship test material. Have you compared readings with other industrial counters and gathered data on your detectors accuracy, scale and error margins?