3 ms·300cpm is lower than what you’d be exposed to on a commercial airline flight (400-900ish cpm).by sithadmin 11mo ago300cpm is lower than what you’d be exposed to on a commercial airline flight (400-900ish cpm).doetoe 11mo agoBut is that the same thing? 300cpm says something about the risk to someone near the worker, not about what the worker has been exposed togblargg 11mo agoCPM is a function of the detector sensitivity/size and radiation level.