This item is for IN-Store Pick up only. Not available to be shipped. AqaSalt is produced 100% using the same evaporated food grade salt process in the two newest and most technologically advanced salt plants in the US. The same AquaSalt you put in your pool is so pure, it is used in the pharmaceutical industry and is certified as USP Grade. AquaSalt is the purest salt available for swimming pool salt-chlorine generators.