There is already a Q&A regarding experiment setup and experimental setup, where the setup, a bunch of instruments, is used to measure properties of something else and the instruments themselves are not under test. It was proposed, that there is a convention to use experimental setup while experiment setup is actually more precise.
However, my non-native speaker supervisor (who has given a lot of great advice) also insist on experimental repetitions and experimental iterations although the meaning is repetitions/iterations of an experiment. I prefer experiment repetitions/iterations. Which is correct and why?