Originally Posted by
DrTimPerkins
Instead, you have to first accept that, for this particular type of use, the product (IPA) is being used to "protect" the tubing system, which can mean that it lengthens the lifespan of use for the material. Because of that, IPA is considered a "pesticide" and would be regulated by the EPA and would NOT be regulated by the USDA (which many might assume and would seem logical since it is used in concert with a food product and food manufacturing materials -- but no...in the U.S. if it isn't used in food or directly in the manufacture of food it isn't part of USDA).