Md. Code, Agriculture § 6-307

(a) Any agricultural liming material or gypsum distributed in the State shall have attached to it or be accompanied by an invoice as provided in § 6–308 of this subtitle bearing a plainly printed statement giving the following information:

(1) Name of the manufacturer or importer, and the address of the manufacturer’s or importer’s principal office;

(2) Name of the place where manufactured;

(3) Brand or trade name of the material;

(4) Name of the form of the material;

(5) Net weight, if the material is sold in a package;

(6) If in a ground or powdered form, fineness of the material showing the percentage passing the 20 mesh sieve, the 60 mesh sieve, and the 100 mesh sieve;

(7) Minimum percent of calcium or magnesium expressed in either the elemental form or as calcium oxide (CaO) or magnesium oxide (MgO), and, in the case of gypsum, the minimum percent of calcium sulfate (CaSO4);

(8) With respect to all burned forms of liming materials, including mixtures of burned and unburned liming materials, a statement of the total percent of calcium and magnesium expressed in either the elemental form or as calcium oxide (CaO) or magnesium oxide (MgO).

(b) The information given in the statement is the manufacturer’s or importer’s guarantee that the product to which it refers is of the kind and quantity or composition and fineness indicated in the statement.