Flurenol-methyl ester, 100 µg/ml, Ethyl acetate,

Prometryn, 10.0 µg/ml, Acetonitrile, 10ml

PCB Mix 50 ppb

N-(4-chloro[13C6]phenyl)-N'-(3,4-dichloro[13C6]phenyl)[13C]urea , 1.2ml x 50ug/ml, methanol