Ferrozeiz is formulated with stabilised iron, chelated with EDDHA. It contains 6% iron, with at least 5.4% Fe EDDHA in ortho-ortho form which is the strongest and most stable type of iron-chelate. This product is stable with a pH range of between 3 and 11 in soil, allowing the availability of the EDDHA to plants in soils with different pH levels, especially in calcareous soils.