supply of chemicals --1 zinc acetate (zn content 18-28) 2 boric acid (b-17) 3 copper sulphate (cu-24) 4 ammonium ferric citrate (fe content 5 magnesium sulphate (mg content 9.6) 6 sulphate of potash (k20 content 50) 7 manganese sulphate (mn 30.5) 8 ammonium molybdate (mo 50) 9 glucose 10 phosphogypsum 11 calcium carbonate) 12 silica powder 13 borax 14 zinc sulphate
