ForewordScopeNormative referencesTerms and definitionsApparatusReagentsGeneralStandard solutions specific to ISO 21079Aluminium oxide standard solution, AlO 1 mg/ml.Calcium oxide standard solution, CaO 1 mg/ml.Chromium(III) oxide standard solution, CrO 1 mg/ml.Diluted chromium(III) oxide standard solution, CrO 0,025 mg/ml.CyDTA (trans-1,2-cyclohexanediamine-N,N,N',N'-tetraacetic acid monohydrate) standard solution, 0,02 mol/l.EDTA standard solution, 5 g/l.Hafnium oxide standard solution, HfO 1 mg/ml.Iron(III) oxide standard solution, FeO 1mg/ml.Diluted iron(III) oxide standard solution, FeO 0,04 mg/ml.Magnesium oxide standard solution, MgO 1 mg/ml.Potassium oxide standard solution, KO 1 mg/ml.Silicon(IV) oxide standard solution, SiO 1 mg/ml.Diluted silicon(IV) oxide standard solution, SiO 0,04 mg/ml.Sodium oxide standard solution, NaO 1 mg/ml.Titanium(IV) oxide standard solution, TiO 1,0 mg /ml.Diluted titanium(IV) oxide standard solution, TiO 0,01 mg/ml.Zinc standard solution, Zn 0,02 mol/l.SamplingGeneral proceduresDetermination of loss on ignitionDecomposition of the sample and preparation of solutions used in the analysisGeneral decomposition techniquesDissolution methods by fusionGeneralPreparing a solution by fusion and dehydrationPrincipleMass of the test portionProcedureBlank testPreparing a solution by fusion and coagulationPrincipleMass of test portionProcedureBlank testPreparing a solution by fusion and dissolution in sulfuric acidPrincipleMass of test portionProcedureBlank testDissolution methods by hydrofluoric acid attackGeneralDecomposition by hydrofluoric acid for flame photometryPrincipleMass of test portionProcedureBlank testDecomposition by hydrofluoric acid for atomic absorption spectrometryPrincipleMass of test portionProcedureBlank testDecomposition by hydrofluoric acid for ICP-AE spectrometryPrincipleMass of test portion weighedProcedureBlank testExpression of test resultsExamination and adoption of test resultsTest reportReferences for stock solutions and blank solutions in this part of ISO 21079 (informative)Bibliography