[89316-50ML-F] Multielement Ion Chromatography Cation Standard Solution, certified suitable for ion chromatography, 10.0 mg/kg +/- 0.2% Li+, Na+, K+, Mg2+, Ca2+ each cation, certified reference material traceable to SI, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland + 747,120원