The concentration of cadmium (Cd), mercury (Hg), or lead (Pb) present in a fertiliser must be stated on the label or advice note in the following circumstances—
(a) if the concentration of cadmium (Cd) is greater than 1·0 milligram of cadmium (Cd) per kilogram; or
(b) if the concentration of mercury (Hg) is greater than 0·2 milligrams of mercury (Hg) per kilogram; or
(c) if the concentration of lead (Pb) is greater than 20·0 milligrams of lead (Pb) per kilogram.