Ultrasol® micro Rexene® Zn15 is a stable and water soluble EDTA zinc chelate. It is developed to prevent or combat zinc deficiency in plants and can be applied by foliar fertilization, soil application or in hydroponic systems. The typical zinc (Zn) content is 15.0%, fully chelated, being EDTA chelated the product remains stable over a wide range of pH conditions (2 to 10).