title: Colorimetric determination of vitamin D2 (calciferol).
mesh_terms: D003124:Colorimetry / Q000379:methods; D004872:Ergocalciferols / Q000032:analysis*; D007202:Indicators and Reagents; D013053:Spectrophotometry
chemical_list: D004872:Ergocalciferols; D007202:Indicators and Reagents