Tayto, you can do that and try a gram SSKI +300mg Lugol for 2 weeks. trapper has warned against impurities in DIY SSKI but 2 weeks of 0,01% impurities (or whatever % there can be in an ACS/USP/Reagent grade KI) won't really harm you and by the time you realize if SSKI is good for you or not, you can then start looking for purest sources.