3. The dicalcium phosphate shall be produced by a process which ensures that all bone material is finely crushed and degreased with hot water and treated with dilute hydrochloric acid (at a minimum concentration of 4% and pH < 1.5) over a period of at least two days followed by a treatment of the obtained phosphoric liquor with lime, resulting in a precipitate of dicalcium phosphate at pH 4 to 7, which is finally air dried with inlet temperature of 65°C — 325°C and end temperature between 30°C — 65°C or by an equivalent process approved in accordance with the procedure of Article 17 of Council Directive 89/662/EEC(1) concerning veterinary checks in intra-Community trade with a view to the completion of the internal market.
O.J. No. L395, 30.12.1989, p. 13, as last amended by Directive 1992/118/EEC (O.J. No. L62, 15.3.1993, p. 49)