I was looking at this website which lists various radioisotope products.
Under "Изотоп Иридий-192" (Iridium Isotope-192), it lists several items such as "ГИИД-1". But I can't for the life of me understand what "ГИИД-1" stands for.
The English format of this website is completely different from the Russian one, and I haven't been able to get anything from Google.
Can someone help, please?