SWIM is currently reporting consistent yields of 1.5% - 2.0% using q21q21 tek!

Also, the results are VERY PURE WHITE xtals upon initial freeze precip. From what SWIM has seen, most STB's result in very yellow crystals during the initial freeze precip. Why spend extra time doing a tek that requires extra steps, when you can have pure white in, literally, three simple steps: add vinegar, add lime, add naphtha...done. haha