I'm a newby having made a couple kits and now I am making 6 gl of Dragon blood and following Dave's recipe closely until i racked it to my carboy and discovered in didn't have the Potassium Sorbate. I did add the Potassium Metabisultfite and am used Superkleer for the clearing agent. I live a long ways to the supply store and won't be in town now for about five days. Should i add it in a week when i get to town or what can happen if i skip the PS? What does the PS do? is there an alternative? i do have Sodium Metabisulfite. Should i add more Potassium Metabisulfite? I'm a bit unclear on what all these chemicals do. Thanks for the great help.