Is it (in the view of SI) correct to note units with more then one prefix? I discuss this since several months with friends, but we could not find a proper source for our statements yet.
Examples for different notations of an electric field
E1 = 1 MV/m E2 = 1 kV/mm E3 = 10 kV/cm
In my research field is no standard established yet so we are continously multiplying.