One of the methods given below is the procedure for the assay of ferrous sulphate as per "I.P.-1996"
1
FeSO4 + H2O + dil H2So4 ×
Ceric ammonium sulphate and ferroin sulphate
2
NaHCO3 + H2O + H2SO4 ×
ceric ammonium nitrate and ferroin sulphate
3
FeSO4 + H2O + 6N H2SO4 ×
Potassium permanganate solution
4
FeSO4 + H2O + 6N H2SO4 ×
Potassium pemanganate solution an dferroin sulphate