Normas ISO

Soil quality -- Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials-- Part 4: Extraction of humic substances from solid samples

Soil quality -- Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials-- Part 3: Extraction of aluminium oxides and hydroxides with ammonium oxalate/oxalic acid

Soil quality -- Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials-- Part 2: Extraction of crystalline iron oxides and hydroxides with dithionite

Soil quality -- Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials-- Part 1: Extraction of amorphous iron oxides and hydroxides with ascorbic acid

Paper and board -- Determination of bending resistance-- Part 1: Constant rate of deflection

Lactose -- Determination of water content -- Karl Fischer method