Azinphos-methyl, 100 µg/ml, Acetonitrile, 5ml

[13C12]Diphenyl ether, 1.2ml x 50ug/ml, nonane

Perfluoro-n-nonanoic acid, 50µg/ml in MeOH, 1,2ml

5-Nitroacenaphthene, 100µg/ml in Acetonitrile, 5ml