Well, you could use STOR with .ctype set as the specific element that you want to pass through it.
Tip: you can then attach/ link this STOR to a PIPE or PRTI to further speed up the separation process.
could use STOR with ctype like cracker1000 said but i think it only works if you alternate STOR and PSCN (1px thick each so it conducts) and constantly spark it. alternatively, you could combine VOID and DTEC and make it power PCLN on the other side but that's much more complicated and probably not worth the time and effort