where are you ordering it from? if they're reputable it won't be coming in water that has copper in it. the reputable ones do a copper/medicated treatment, then move to a non-medicated observation tank for at least a couple weeks to make sure something didn't fail
beyond that, i use colanders to move fish around. just move it to a bucket of your own DT water and then move it in, it should be a miniscule amount of bad stuff at that point