C05DINORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05CFERTILISERS PRODUCING CARBON DIOXIDEThe following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups: C05D11/00covered byC05D1/00 - C05D9/00 (see internal note after the title of class C05) C05D1/00 C05D1/00Fertilisers containing potassium C05D7/00 takes precedence C05D1/005post-treatment C05D1/02Manufacture from potassium chloride or sulfate or double or mixed salts thereof C05D1/04from minerals or volcanic rocks C05D3/00Calcareous fertilisers C05D7/00 takes precedence C05D3/02from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products C05D3/04from blast-furnace slag or other slags containing lime or calcium silicates C05D5/00Fertilisers containing magnesium C05D7/00 takes precedence C05D7/00Fertilisers producing carbon dioxide C05D9/00Other inorganic fertilisers C05D9/02containing trace elements