Silicon (Si), 1000µg/ml in 2%-HNO3/Water, 100ml

Chlorfenprop-methyl, 100 µg/ml, Acetonitrile, 1m

2,2',3,4,5,5'-Hexachloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

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