Cyanazine, 10 µg/ml, Ethyl acetate, 10ml

2,2',3,3',4,5',6-Heptachlorobiphenyl,100 µg/mL,isooctane,1mL,

Labelled Compound Stock Solution, in Nonane/3.2% toluene, 1,2ml

4-Ethylphenol