To get a 1% iodine solution, you'd need 10 mg of iodine per ml. So that's 100 mg for a 10 ml disinfection solution.

Which is about 10 tablets into 10 mls to get just under 1% iodine, but perhaps 5 tablets could be used to get a more dilute solution that is less irritating.

I don't know if that many tablets would dissolve into the small amount of water, but I take the reverse approach. I EDC a small vial of poviodine for wound disinfection and water purification, even though poviodine doesn't allow for very accurate calculation of iodine release, as the iodine is stuck to a polymer. I also carry a vial of tincture of iodine (one that has ethanol as a diluent) in my BOB as well.

There is lots of new research with chlorine dioxide being used as a disinfectant, but I haven't had the chance to look at the concentrations used on wounds yet.