Certification of fertilising limes

Criteria such as reactivity, moisture and dry mass content, and carbon oxide content are tested for fertiliser lime. Fertiliser lime undergoes various sieving processes and must also be tested for calcium oxide content as carbonate.

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DLG test criteria for fertilising lime

Carbonate of lime

  • Moisture/dry matter content
  • Calcium/magnesium/total carbonate content
  • Alkaline content
  • Reactivity
  • Contents of pollutants and secondary components according to German Fertiliser Ordinance (DüMV)
  • Sieving cycles

Burnt limes (calcium oxide)

  • Moisture/dry matter content
  • Calcium/magnesium/total oxide content
  • Carbon oxide content
  • Calcium oxide content as carbonate and unbound calcium oxide
  • Contents of pollutants and secondary components according to German Fertiliser Ordinance (DüMV)
  • Sieving cycles

Mixed limes

  • Moisture/dry matter content
  • Calcium/magnesium/total oxide content
  • Carbon oxide content
  • Calcium oxide content as carbonate and unbound calcium oxide
  • Contents of pollutants and secondary components according to German Fertiliser Ordinance (DüMV)
  • Sieving cycles