Iron has an important role as a constituent of haemoglobin and myoglobin (red pigment responsible for the absorption and transport of oxygen); iron is essential in metabolism as a component of a group of enzymes important in cell respiration. Deficiency leads to anaemia.

Main sources

Iron sulphate monohydrate

Iron sulphate heptahydrate

Quality and selection parameters
Free flowing qualities shoudl be used. Important advantages of this free-flowing sulphate are the avoidance of caking, the ability to make homogeneous mixtures as well as its excellent stability.The percentage of two valent iron should be taken into consideration too. 

Analytical methods
DIN EN ISO 11885