Potassium Iodide Download Specification (COA) Products search Sale! Potassium Iodide, High Purity Crystals, 99.8 % min., 100 grams $40.99 Original price was: $40.99.$26.75Current price is: $26.75. Read more Sale! Potassium Iodide, Pure USP Crystals, 500 grams $97.99 Original price was: $97.99.$90.75Current price is: $90.75. Add to cart