Foodstuffs - Determination of vitamin A by high performance liquid chromatography - Part 2: Measurement of <beta>-carotene; German version EN 12823-2:2000— 14 стр.
Foodstuffs - Determination of vitamin A by high performance liquid chromatography - Part 1: Measurement of all-trans-retinol and 13-cis-retinol; German version EN 12823-1:2000— 14 стр.
Accuracy (trueness and precision) of measurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method (ISO 5725-2:1994 including Technical Corrigendum 1:2002)— 97 стр.