PCB No. 112, 10 µg/ml, 10ml

1-(3,4-Dichlorophenyl)urea, 100µg/ml in AL, 5ml

2-Aminonaphthalene,100 µg/mL,acetonitrile,1mL,

2,2',3,4',5',6-Hexachlorobiphenyl (149)