2,4-Dinitrophenol, 250mg

ICP-AES CRI, Soil Matrix, in 5% HNO3, 100ml

2-Aminoanthraquinone, 1000µg/ml in MeChl.,1ml

ISO 9377-2MOD Extraction Solvent Stock Solution I 20ul of n-Heptane and 20mg of n-Tetracontane solved in 1000ml n-Pentane