Division 4.5.1
United Kingdom
Liquid chromatographic column, 250 mm x 4 mm, C18, 5 or 10 μm packing, or equivalent (performance criterion: only a single peak for all retinol isomers under the HPLC-conditions)
United Kingdom
Liquid chromatographic column, 250 mm x 4 mm, C18, 5 or 10 μm packing, or equivalent (performance criterion: only a single peak for all retinol isomers under the HPLC-conditions)