Fertilizer Standards

Fertilizer Standards of Straight Fertilizers and accepted heavy metal contents in a compound fertilizers.

Urea Chemical composition of the fertilizer
a.) Nitrogen Content (Min.)
b.) Biuret Content (Max)
c.) As
d.) Cd
e.) Pb
f.) Cr
g.) Hg
Accepted Value
46.0% (on dry basis)
1.0%
0.1 ppm
0.1 ppm
0.1 ppm
3.0 ppm
0.1 ppm
TSP Chemical composition of the fertilizer
a.) Total P, as P2O5, % by mass, Min.
b.) Water soluble P, as P2O5, % by mass, Min.(of total P)
c.) Free Phosphoric acid as, P2O5, % by mass, Max.
d.) Arsenic as As mg/kg, Max
e.) Cadmium as Cd mg/kg, Max
f.) Lead as Pb mg/kg, Max
g.) Chromium as Cr mg/kg, Max
h.) Mercury as Hg mg/kg, Max
Accepted Value
46.0%
80.0%3.0 %25 ppm
3 ppm
30 ppm
50 ppm
1 ppm
MOP Chemical composition of the fertilizer

  1. Potash Content, as K2O% by mass, (Min.)
  2. Na Content, as NaCl, % by mass, (on dry basis) , Max
  3. Mg as MgCl2, % by mass , Max
  4. As
  5. Cd
  6. Pb
  7. Cr
  8. Hg
 

  1. 60.0%
  2. 3.5%
  3. 1.0 %
  4. 0.3 ppm
  5. 0.2 ppm
  6. 0.2 ppm
  7. 10.0 ppm
  8. 0.2 ppm
Chemical composition of the fertilizer

  1. As
  2. Cd
  3. Pb
  4. Cr
  5. Hg
 

  1. 25ppm
  2. 3ppm
  3. 30ppm
  4. 50ppm
  5. 1ppm