Ethidimuron, 10 µg/ml, Acetonitrile, 10ml

3,3',4,5'-Tetrachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

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

Sodium p-n-tridecylbenzenesulfonate, 1000µg/mL in MeOH, 1ml