Hello all, I am pretty new to all this and catching up. I use a kroma r + zlide for MTL and I am quite happy with the kit. I would like to buy bigger bottles for my favourite e liquids, but I am unsure how to get a 12mg mix. Is there any shortfill that is easy to use and I just need to put nicotine in it? I enjoy most the vampire vape ranges of Heisenberg, Western tobacco and sweet lemon pie, but I wouldn't know what to do to get their concentrates to 12mg.