ForewordIntroductionScopeNormative referencesTerms and definitionsPrincipleReagentsApparatusSample pretreatmentPreparation of laboratory sample and specification of particle sizePreparation of test sampleDetermination of the dry matter content and of water contentPreparation of the test portionProcedureTemperaturePreparation of leachantsGeneralCalcium chloride solution, c(CaCl) = 0,001 mol/lAnaerobic calcium chloride solution, c(CaCl) = 0,001 mol/l with 0,100 mol/l Na-L-LactateLeaching stepCalculation to the quantity of leachantAerobic leaching procedureAnaerobic leaching procedureLiquid/solid separation stepFurther preparation of the eluate for analysisBlank testCalculationTest reportAnalytical determinationGeneralBlank test informationExamples of aerobic and anaerobic extraction (informative)Aerobic extractionAnaerobic extractionExample of a specific liquid-solid separation procedure for soil samples (informative)GeneralApparatusProcedureCalculation of centrifugation duration depending on centrifugation speed and rotor dimensions (informative)GeneralCalculationsBibliography