Assay (Acidim.), not less than...........................................................85 %

Appearance........................................................................................... p/t

Identity:

Phosphate............................................................................................ p/t.

Arsenic (as As), not more than........................................................ 3 ppm

Fluoride, not more than................................................................. 10 ppm

Chloride, not more than.................................................................. 0,02 %

Nitrate (as NaNO3), not more than................................................... 5 ppm

Sulphate (as CaSO4), not more than............................................... 0,15 %

Heavy metals (as Pb), not more than.............................................. 5 ppm

Volatile acidity (as CH3COOH), not more than............................... 10 ppm

Cadmium (Cd), not more than......................................................... 1 ppm

Lead (Pb), not more than................................................................. 3 ppm

Mercury (Hg), not more than........................................................... 1 ppm