2,2',3,3',4,5,6'-Heptachlorobiphenyl (174)

Pencycuron, 100 µg/ml, Acetonitrile, 5ml

2-n-Nonylphenol-mono-ethoxylate, 100 µg/ml, Aceto

4-tert-Butylphenyldiphenyl phosphate,50 µg/mL,toluene,1mL,