The Fertilisers Regulations 1991

6.  The content declared in accordance with paragraph 1(d), 1(e) and 1(f) shall be indicated both in words and by the appropriate chemical symbol as follows:

(a) Nitrogen (N)

(b) Phosphorus pentoxide (P₂O₅)

(c) Potassium oxide (K₂O)

(d) Magnesium oxide (MgO)

(e) Calcium oxide (CaO)

(f) Sodium oxide (Na₂O)

(g) Sulphur trioxide (SO₃)

(h) Chlorine (Cl)

(i) Boron (B)

(j) Cobalt (Co)

(k) Copper (Cu)

(l) Iron (Fe)

(m) Manganese (Mn)

(n) Molybdenum (Mo)

(o) Zinc (Zn)

with an organic molecule named in table 2, the name of that element followed by “chelated by ... ... ... ...” followed by the name of the chelating agent or its abbreviation as set out in table 2 to this Schedule.