Ethoprophos, 100 µg/ml, Toluene, 1ml

Tetraphenylrecorcinol bis(diphenylphosphate, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 57583-54-7

2,3',4,5,5'-Pentachloro-4'-methoxy[13C12]biphenyl, 1.2ml x 50ug/ml, toluene

Perfluoro-1-butanesulfonamide , 1.2ml x 50ug/ml, isopropanol