N-Nitroso-N-methylaniline, 100mg

1,2,3,4,6,7,8-Heptachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

2,3-Dimethylaniline, 100mg

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