Glass and glassware; analysis of extract solutions; part 4: determination of aluminium oxide by molecular absorption spectrometry
Edition 1993-07

Glass and glassware; analysis of extract solutions; part 6: determination of boron(III) oxide by molecular absorption spectrometry
Edition 1993-07

Glass and glassware; analysis of extract solutions; part 2: determination of sodium oxide and potassium oxide by flame spectrometric methods
Edition 1993-07

Glass and glassware; analysis of extract solutions; part 3: determination of calcium oxide and magnesium oxide by flame atomic absorption spectrometry
Edition 1993-07

Glas and glassware; analysis of extract solutions; part 5: determination of iron(III) oxide by molecular absorption spectrometry and flame atomic absorption spectrometry
Edition 1993-07

Tea - Determination of water extract (ISO 9768:1994)
Edition 1999-07

Textiles - Determination of pH of aqueous extract (ISO 3071:2020); German version EN ISO 3071:2020
Edition 2020-05

Feather and down - Test methods - Determination of the turbidity of an aqueous extract; German version EN 1164:1998
Edition 1998-10

Paper and board intended to come into contact with foodstuffs; preparation of a hot water extract; German version EN 647:1993
Edition 1994-01

Paper and board intended to come into contact with foodstuffs; preparation of a cold water extract; German version EN 645:1993
Edition 1994-01