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Shuman Chemical Laboratory, Inc., Battle Ground, Indiana
Abstract
Laboratory and field tests on four commercially used iodine sources for trace-mineralized salt conclusively show that 3,5-diiodosalicylic acid is the only one proving a source of iodine which is constantly in the surface and obtained by the animal consuming the salt in a normal manner. Potassium iodide and calcium iodate are rapidly lost from the surface layer when exposed to outdoor weather conditions.
1 This investigation was supported by Morton Salt Company, Chicago, Illinois.
2 The authors are indebted to Van Natta Herefords, Battle Ground, Indiana where the field tests were conducted.
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