Pesticides Calibration LC-MS/MS

2,2',4,4'-Tetrachlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2437-79-8

6a-Methyl Prednisone 21-Acetate, 5mg

Profluralin, 100 µg/ml, Ethyl acetate, 1ml