[Color fading of a hemoglobin measurement reagent (Van Kampen solution) caused by changes of a ferric consituent, and the reservation of activity of the reagent (author's transl)].
D004355:Drug Stability; D005290:Ferric Compounds / Q000032:analysis*; D006452:Hemoglobinometry / Q000379:methods*; D007202:Indicators and Reagents; D007501:Iron / Q000032:analysis*; D013053:Spectrophotometry / Q000379:methods
D005290:Ferric Compounds; D007202:Indicators and Reagents; D007501:Iron